- published: 03 Feb 2015
- views: 56
Create your page here
Monday, 31 October 2016
-
remove the playlistMetallicity
-
remove the playlistLatest Videos
-
remove the playlistLongest Videos
- remove the playlistMetallicity
- remove the playlistLatest Videos
- remove the playlistLongest Videos
back to playlist
In astronomy and physical cosmology, the "metallicity" or ""Z"", is the fraction of mass of a star or other kind of astronomical object, beyond hydrogen and helium . Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers conveniently use the blanket term "metals" to refer to all other elements. For example, stars or nebulae that are relatively rich in carbon, nitrogen, oxygen, and neon would be "metal-rich" in astrophysical terms, even though those elements are non-metals in chemistry. This term should not be confused with the usual physical definition of solid metals.
Metallicity within stars and other astronomical objects is an approximate estimation of their chemical abundances that change over time by the mechanisms of stellar evolution,
and therefore provide an indication of their age.
In cosmological terms, the universe is also chemically evolving. According to the Big Bang Theory, the early universe first consisted of hydrogen and helium, with trace amounts of lithium and beryllium, but no heavier elements. Through the process of stellar evolution, where stars at the end of their lives discard most of their mass by stellar winds or explode as supernovae, the metal content of the Galaxy and the universe increases. It is postulated that older generations of stars generally have lower metallicities than those of younger generations.
Observed changes in the chemical abundances of different types of stars, based on the spectral peculiarities that were later attributed to metallicity, led astronomer Walter Baade in 1944 to propose the existence of two different populations of stars.
These became commonly known as "Population I" and "Population II" stars. A third stellar population was introduced in 1978, known as "Population III" stars.
Wiz Science™ is "the" learning channel for children and all ages.
SUBSCRIBE TODAY
Disclaimer: This video is for your information only. The author or publisher does not guarantee the accuracy of the content presented in this video. USE AT YOUR OWN RISK.
Background Music:
"The Place Inside" by Silent Partner (royalty-free) from YouTube Audio Library.
This video uses material/images from https://en.wikipedia.org/wiki/Metallicity, which is released under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . This video is licensed under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . To reuse/adapt the content in your own work, you must comply with the license terms.
- published: 29 Sep 2015
- views: 79
Still on the topic of WR 104, astronomers look at the correlational between the amount of metals present versus the rate of Gamma Ray Burst events. It seems that although stars may still undergo a supernova, the rotational speeds are reduced the heavier the star therefore less chance of them resulting in a Gamma Ray Burst.
Still the million dollar question is... Are we in flying into the danger zone?
NEXT: The Death Star galaxy 3C321 makes systems like WR 104 look like nothing: https://www.youtube.com/watch?v=cberEfe698A
Suggested WR104 videos:
"WR 104: Looking down the barrel - Supernova or Gamma Ray Burst?"
https://www.youtube.com/watch?v=cI6fW5i_JhU
"WR 104: A real life death star system - Wolf Rayet Stars"
https://www.youtube.com/watch?v=uiL6lKYo-YY
More cool shorts like this in the 'Short yet detailed' playlist: https://www.youtube.com/playlist?list=PLke8o-yBwNzFFJDYBpj4a1i1mymSphFWA
Star metallicity & Gamma Ray Bursts - Danger Zone
Purely for educational purposes.
stargazer.
- published: 01 May 2016
- views: 3292
What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanation.
In astronomy and physical cosmology, the metallicity or Z is the fraction of mass of a star or other kind of astronomical object that is not in hydrogen (X) or helium (Y). Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers use the word "metals" as a convenient short term for "all elements except hydrogen and helium". This usage is distinct from the usual physical definition of a solid metal. The rationale for the astronomical usage is that in the high-temperature and pressure environment of a star, atoms do not undergo chemical reactions and effectively have no chemical properties, including that of being a metal as usually understood. For example, stars and nebulae with relatively high abundances of carbon, nitrogen, oxygen, and neon are called "metal-rich" in astrophysical terms, even though those elements are non-metals in chemistry.
The distinction between hydrogen and helium on the one hand and metals on the other is relevant because the primordial universe is believed to have contained virtually no metals, which were later synthesised within stars.
Metallicity within stars and other astronomical objects is an approximate estimation of their chemical abundances that change over time by the mechanisms of stellar evolution, and therefore provide an indication of their age. In cosmological terms, the universe is chemically evolving. According to the Big Bang Theory, the early universe first consisted of hydrogen and helium, with trace amounts of lithium and beryllium, but no heavier elements. Through the process of stellar evolution stars first generate energy by synthesising metals from hydrogen and helium by nuclear reactions, then disperse most of their mass by stellar winds or explode as supernovae, dispersing the new metals into the universe. It is believed that older generations of stars generally have lower metallicities than those of younger generations, having been formed in the metal-poor early universe.
Observed changes in the chemical abundances of different types of stars, based on the spectral peculiarities that were later attributed to metallicity, led astronomer Walter Baade in 1944 to propose the existence of two different populations of stars. These became commonly known as Population I (metal-rich) and Population II (metal-poor) stars. A third stellar population was introduced in 1978, known as Population III stars. These extremely metal-poor stars were theorised to have been the 'first-born' stars created in the universe.
- published: 22 Aug 2016
- views: 21
Duncan Forbes, Swinburne, "Metallicity maps of galaxies in observations and simulations"
2013 Santa Cruz Galaxy Workshop
University of California, Santa Cruz
http://hipacc.ucsc.edu/GalaxyWorkshop...
August 15, 2013
- published: 15 Aug 2013
- views: 64
A Bryce 7.1 Pro tutorial aimed at people who are very well versed in Bryce and wish to expand their skills. Exploring material properties and creating a soft pearlescent sheen material effect as a result. Be aware, this video is more experiment than tutorial, hence my suggestion that it is aimed at more advanced users.
Some additional text is included in the video, you may have to pause the video to read it.
Better viewed in HD - some of the controls in Bryce are quite fiddly and small.
For more tutorials visit http://www.bryce-tutorials.info/
- published: 08 May 2013
- views: 188
According to the Illustris simulation, this is a four-panel display of the same ~33 million light year on-a-side cube in space. What started out as an overdense region grew into a region filled with stars, gas, galaxies and more. The evolution takes place from high redshift (~z = 10) and comes all the way to the present day (z = 0).
The upper left panel shows stellar light, the upper right panel shows the gas density, the lower left panel shows gas temperature, while the lower-right panel shows the evolution of metallicity, which measures the abundance of heavy elements (heavier than helium) in each region of space.
Credit: The Illustris Simulation / Illustris Collaboration. More at: http://www.illustris-project.org/media/.
- published: 25 Mar 2016
- views: 235
Metallicity
In astronomy and physical cosmology, the metallicity or Z is the fraction of mass of a star or other kind of astronomical object that is not in hydrogen (X) or helium (Y). Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers use the word "metals" as a convenient short term for "all elements except hydrogen and helium". This usage is distinct from the usual physical definition of a solid metal. The astronomical usage is claimed to be justified because in the high-temperature and pressure environment of a star, atoms do not undergo chemical reactions and effectively have no chemical properties, including that of being a metal as usually understood. For example, stars and nebulae with relatively high abundances of carbon, nitrogen, oxygen, and neon are called "metal-rich" in astrophysical terms, even though those elements are non-metals in chemistry.
The distinction between hydrogen and helium on the one hand and metals on the other is relevant because the primordial universe is believed to have contained virtually no metals, which were later synthesised within stars.
This page contains text from Wikipedia, the Free Encyclopedia -
https://wn.com/Metallicity
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
- Loading...
-
14:46Metallicity
MetallicityMetallicity
-
2:19Metallicity - Video Learning - WizScience.com
Metallicity - Video Learning - WizScience.comMetallicity - Video Learning - WizScience.com
In astronomy and physical cosmology, the "metallicity" or ""Z"", is the fraction of mass of a star or other kind of astronomical object, beyond hydrogen and helium . Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers conveniently use the blanket term "metals" to refer to all other elements. For example, stars or nebulae that are relatively rich in carbon, nitrogen, oxygen, and neon would be "metal-rich" in astrophysical terms, even though those elements are non-metals in chemistry. This term should not be confused with the usual physical definition of solid metals. Metallicity within stars and other astronomical objects is an approximate estimation of their chemical abundances that change over time by the mechanisms of stellar evolution, and therefore provide an indication of their age. In cosmological terms, the universe is also chemically evolving. According to the Big Bang Theory, the early universe first consisted of hydrogen and helium, with trace amounts of lithium and beryllium, but no heavier elements. Through the process of stellar evolution, where stars at the end of their lives discard most of their mass by stellar winds or explode as supernovae, the metal content of the Galaxy and the universe increases. It is postulated that older generations of stars generally have lower metallicities than those of younger generations. Observed changes in the chemical abundances of different types of stars, based on the spectral peculiarities that were later attributed to metallicity, led astronomer Walter Baade in 1944 to propose the existence of two different populations of stars. These became commonly known as "Population I" and "Population II" stars. A third stellar population was introduced in 1978, known as "Population III" stars. Wiz Science™ is "the" learning channel for children and all ages. SUBSCRIBE TODAY Disclaimer: This video is for your information only. The author or publisher does not guarantee the accuracy of the content presented in this video. USE AT YOUR OWN RISK. Background Music: "The Place Inside" by Silent Partner (royalty-free) from YouTube Audio Library. This video uses material/images from https://en.wikipedia.org/wiki/Metallicity, which is released under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . This video is licensed under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . To reuse/adapt the content in your own work, you must comply with the license terms. -
3:13Star metallicity & Gamma Ray Bursts - Danger Zone
Star metallicity & Gamma Ray Bursts - Danger ZoneStar metallicity & Gamma Ray Bursts - Danger Zone
Still on the topic of WR 104, astronomers look at the correlational between the amount of metals present versus the rate of Gamma Ray Burst events. It seems that although stars may still undergo a supernova, the rotational speeds are reduced the heavier the star therefore less chance of them resulting in a Gamma Ray Burst. Still the million dollar question is... Are we in flying into the danger zone? NEXT: The Death Star galaxy 3C321 makes systems like WR 104 look like nothing: https://www.youtube.com/watch?v=cberEfe698A Suggested WR104 videos: "WR 104: Looking down the barrel - Supernova or Gamma Ray Burst?" https://www.youtube.com/watch?v=cI6fW5i_JhU "WR 104: A real life death star system - Wolf Rayet Stars" https://www.youtube.com/watch?v=uiL6lKYo-YY More cool shorts like this in the 'Short yet detailed' playlist: https://www.youtube.com/playlist?list=PLke8o-yBwNzFFJDYBpj4a1i1mymSphFWA Star metallicity & Gamma Ray Bursts - Danger Zone Purely for educational purposes. stargazer. -
3:07Mass-metallicity relation for galaxies calibrated: Brown et al. (2016) OSU Astronomy Coffee Brief
Mass-metallicity relation for galaxies calibrated: Brown et al. (2016) OSU Astronomy Coffee BriefMass-metallicity relation for galaxies calibrated: Brown et al. (2016) OSU Astronomy Coffee Brief
This is an OSU Astronomy "Coffee Brief" for the Brown et al. (2016) paper "A Recalibration of Strong Line Oxygen Abundance Diagnostics via the Direct Method and Implications for the High Redshift Universe" posted on astro-ph on February 4, 2016. -
3:09What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanation
What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanationWhat is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanation
What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanation. In astronomy and physical cosmology, the metallicity or Z is the fraction of mass of a star or other kind of astronomical object that is not in hydrogen (X) or helium (Y). Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers use the word "metals" as a convenient short term for "all elements except hydrogen and helium". This usage is distinct from the usual physical definition of a solid metal. The rationale for the astronomical usage is that in the high-temperature and pressure environment of a star, atoms do not undergo chemical reactions and effectively have no chemical properties, including that of being a metal as usually understood. For example, stars and nebulae with relatively high abundances of carbon, nitrogen, oxygen, and neon are called "metal-rich" in astrophysical terms, even though those elements are non-metals in chemistry. The distinction between hydrogen and helium on the one hand and metals on the other is relevant because the primordial universe is believed to have contained virtually no metals, which were later synthesised within stars. Metallicity within stars and other astronomical objects is an approximate estimation of their chemical abundances that change over time by the mechanisms of stellar evolution, and therefore provide an indication of their age. In cosmological terms, the universe is chemically evolving. According to the Big Bang Theory, the early universe first consisted of hydrogen and helium, with trace amounts of lithium and beryllium, but no heavier elements. Through the process of stellar evolution stars first generate energy by synthesising metals from hydrogen and helium by nuclear reactions, then disperse most of their mass by stellar winds or explode as supernovae, dispersing the new metals into the universe. It is believed that older generations of stars generally have lower metallicities than those of younger generations, having been formed in the metal-poor early universe. Observed changes in the chemical abundances of different types of stars, based on the spectral peculiarities that were later attributed to metallicity, led astronomer Walter Baade in 1944 to propose the existence of two different populations of stars. These became commonly known as Population I (metal-rich) and Population II (metal-poor) stars. A third stellar population was introduced in 1978, known as Population III stars. These extremely metal-poor stars were theorised to have been the 'first-born' stars created in the universe. -
8:54The Problem with Metallicity, Stellar Metamorphosis
The Problem with Metallicity, Stellar MetamorphosisThe Problem with Metallicity, Stellar Metamorphosis
-
20:50Duncan Forbes "Metallicity maps of galaxies in observations and simulations"
Duncan Forbes "Metallicity maps of galaxies in observations and simulations"Duncan Forbes "Metallicity maps of galaxies in observations and simulations"
Duncan Forbes, Swinburne, "Metallicity maps of galaxies in observations and simulations" 2013 Santa Cruz Galaxy Workshop University of California, Santa Cruz http://hipacc.ucsc.edu/GalaxyWorkshop... August 15, 2013 -
3:16test8 "Metallicity"
test8 "Metallicity"test8 "Metallicity"
t8-13#4 -
8:32Bryce Experiments - Metallicity and Specular Halo - by David Brinnen.
Bryce Experiments - Metallicity and Specular Halo - by David Brinnen.Bryce Experiments - Metallicity and Specular Halo - by David Brinnen.
A Bryce 7.1 Pro tutorial aimed at people who are very well versed in Bryce and wish to expand their skills. Exploring material properties and creating a soft pearlescent sheen material effect as a result. Be aware, this video is more experiment than tutorial, hence my suggestion that it is aimed at more advanced users. Some additional text is included in the video, you may have to pause the video to read it. Better viewed in HD - some of the controls in Bryce are quite fiddly and small. For more tutorials visit http://www.bryce-tutorials.info/ -
2:24Stars, Gas, Temperature and Metallicity in the Illustris Simulation
Stars, Gas, Temperature and Metallicity in the Illustris SimulationStars, Gas, Temperature and Metallicity in the Illustris Simulation
According to the Illustris simulation, this is a four-panel display of the same ~33 million light year on-a-side cube in space. What started out as an overdense region grew into a region filled with stars, gas, galaxies and more. The evolution takes place from high redshift (~z = 10) and comes all the way to the present day (z = 0). The upper left panel shows stellar light, the upper right panel shows the gas density, the lower left panel shows gas temperature, while the lower-right panel shows the evolution of metallicity, which measures the abundance of heavy elements (heavier than helium) in each region of space. Credit: The Illustris Simulation / Illustris Collaboration. More at: http://www.illustris-project.org/media/.
-
Metallicity
published: 03 Feb 2015 -
Metallicity - Video Learning - WizScience.com
In astronomy and physical cosmology, the "metallicity" or ""Z"", is the fraction of mass of a star or other kind of astronomical object, beyond hydrogen and helium . Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers conveniently use the blanket term "metals" to refer to all other elements. For example, stars or nebulae that are relatively rich in carbon, nitrogen, oxygen, and neon would be "metal-rich" in astrophysical terms, even though those elements are non-metals in chemistry. This term should not be confused with the usual physical definition of solid metals. Metallicity within stars and other astronomical objects is an approximate estimation of their chemical abundances that change over time by the mechanisms of stellar evolution...
published: 29 Sep 2015 -
Star metallicity & Gamma Ray Bursts - Danger Zone
Still on the topic of WR 104, astronomers look at the correlational between the amount of metals present versus the rate of Gamma Ray Burst events. It seems that although stars may still undergo a supernova, the rotational speeds are reduced the heavier the star therefore less chance of them resulting in a Gamma Ray Burst. Still the million dollar question is... Are we in flying into the danger zone? NEXT: The Death Star galaxy 3C321 makes systems like WR 104 look like nothing: https://www.youtube.com/watch?v=cberEfe698A Suggested WR104 videos: "WR 104: Looking down the barrel - Supernova or Gamma Ray Burst?" https://www.youtube.com/watch?v=cI6fW5i_JhU "WR 104: A real life death star system - Wolf Rayet Stars" https://www.youtube.com/watch?v=uiL6lKYo-YY More cool shorts like this in the...
published: 01 May 2016 -
Mass-metallicity relation for galaxies calibrated: Brown et al. (2016) OSU Astronomy Coffee Brief
This is an OSU Astronomy "Coffee Brief" for the Brown et al. (2016) paper "A Recalibration of Strong Line Oxygen Abundance Diagnostics via the Direct Method and Implications for the High Redshift Universe" posted on astro-ph on February 4, 2016.
published: 02 Feb 2016 -
What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanation
What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanation. In astronomy and physical cosmology, the metallicity or Z is the fraction of mass of a star or other kind of astronomical object that is not in hydrogen (X) or helium (Y). Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers use the word "metals" as a convenient short term for "all elements except hydrogen and helium". This usage is distinct from the usual physical definition of a solid metal. The rationale for the astronomical usage is that in the high-temperature and pressure environment of a star, atoms do not undergo chemical reactions and effectively have no chemical properties, including that of being a metal as usually understood. For example,...
published: 22 Aug 2016 -
The Problem with Metallicity, Stellar Metamorphosis
published: 31 May 2015 -
Duncan Forbes "Metallicity maps of galaxies in observations and simulations"
Duncan Forbes, Swinburne, "Metallicity maps of galaxies in observations and simulations" 2013 Santa Cruz Galaxy Workshop University of California, Santa Cruz http://hipacc.ucsc.edu/GalaxyWorkshop... August 15, 2013
published: 15 Aug 2013 -
test8 "Metallicity"
t8-13#4
published: 14 Sep 2013 -
Bryce Experiments - Metallicity and Specular Halo - by David Brinnen.
A Bryce 7.1 Pro tutorial aimed at people who are very well versed in Bryce and wish to expand their skills. Exploring material properties and creating a soft pearlescent sheen material effect as a result. Be aware, this video is more experiment than tutorial, hence my suggestion that it is aimed at more advanced users. Some additional text is included in the video, you may have to pause the video to read it. Better viewed in HD - some of the controls in Bryce are quite fiddly and small. For more tutorials visit http://www.bryce-tutorials.info/
published: 08 May 2013 -
Stars, Gas, Temperature and Metallicity in the Illustris Simulation
According to the Illustris simulation, this is a four-panel display of the same ~33 million light year on-a-side cube in space. What started out as an overdense region grew into a region filled with stars, gas, galaxies and more. The evolution takes place from high redshift (~z = 10) and comes all the way to the present day (z = 0). The upper left panel shows stellar light, the upper right panel shows the gas density, the lower left panel shows gas temperature, while the lower-right panel shows the evolution of metallicity, which measures the abundance of heavy elements (heavier than helium) in each region of space. Credit: The Illustris Simulation / Illustris Collaboration. More at: http://www.illustris-project.org/media/.
published: 25 Mar 2016
Metallicity
- Order: Reorder
- Duration: 14:46
- Updated: 03 Feb 2015
- views: 56
- published: 03 Feb 2015
- views: 56
Metallicity - Video Learning - WizScience.com
- Order: Reorder
- Duration: 2:19
- Updated: 29 Sep 2015
- views: 79
In astronomy and physical cosmology, the "metallicity" or ""Z"", is the fraction of mass of a star or other kind of astronomical object, beyond hydrogen and h...
In astronomy and physical cosmology, the "metallicity" or ""Z"", is the fraction of mass of a star or other kind of astronomical object, beyond hydrogen and helium . Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers conveniently use the blanket term "metals" to refer to all other elements. For example, stars or nebulae that are relatively rich in carbon, nitrogen, oxygen, and neon would be "metal-rich" in astrophysical terms, even though those elements are non-metals in chemistry. This term should not be confused with the usual physical definition of solid metals.
Metallicity within stars and other astronomical objects is an approximate estimation of their chemical abundances that change over time by the mechanisms of stellar evolution,
and therefore provide an indication of their age.
In cosmological terms, the universe is also chemically evolving. According to the Big Bang Theory, the early universe first consisted of hydrogen and helium, with trace amounts of lithium and beryllium, but no heavier elements. Through the process of stellar evolution, where stars at the end of their lives discard most of their mass by stellar winds or explode as supernovae, the metal content of the Galaxy and the universe increases. It is postulated that older generations of stars generally have lower metallicities than those of younger generations.
Observed changes in the chemical abundances of different types of stars, based on the spectral peculiarities that were later attributed to metallicity, led astronomer Walter Baade in 1944 to propose the existence of two different populations of stars.
These became commonly known as "Population I" and "Population II" stars. A third stellar population was introduced in 1978, known as "Population III" stars.
Wiz Science™ is "the" learning channel for children and all ages.
SUBSCRIBE TODAY
Disclaimer: This video is for your information only. The author or publisher does not guarantee the accuracy of the content presented in this video. USE AT YOUR OWN RISK.
Background Music:
"The Place Inside" by Silent Partner (royalty-free) from YouTube Audio Library.
This video uses material/images from https://en.wikipedia.org/wiki/Metallicity, which is released under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . This video is licensed under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . To reuse/adapt the content in your own work, you must comply with the license terms.
wn.com/Metallicity Video Learning Wizscience.Com
In astronomy and physical cosmology, the "metallicity" or ""Z"", is the fraction of mass of a star or other kind of astronomical object, beyond hydrogen and helium . Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers conveniently use the blanket term "metals" to refer to all other elements. For example, stars or nebulae that are relatively rich in carbon, nitrogen, oxygen, and neon would be "metal-rich" in astrophysical terms, even though those elements are non-metals in chemistry. This term should not be confused with the usual physical definition of solid metals.
Metallicity within stars and other astronomical objects is an approximate estimation of their chemical abundances that change over time by the mechanisms of stellar evolution,
and therefore provide an indication of their age.
In cosmological terms, the universe is also chemically evolving. According to the Big Bang Theory, the early universe first consisted of hydrogen and helium, with trace amounts of lithium and beryllium, but no heavier elements. Through the process of stellar evolution, where stars at the end of their lives discard most of their mass by stellar winds or explode as supernovae, the metal content of the Galaxy and the universe increases. It is postulated that older generations of stars generally have lower metallicities than those of younger generations.
Observed changes in the chemical abundances of different types of stars, based on the spectral peculiarities that were later attributed to metallicity, led astronomer Walter Baade in 1944 to propose the existence of two different populations of stars.
These became commonly known as "Population I" and "Population II" stars. A third stellar population was introduced in 1978, known as "Population III" stars.
Wiz Science™ is "the" learning channel for children and all ages.
SUBSCRIBE TODAY
Disclaimer: This video is for your information only. The author or publisher does not guarantee the accuracy of the content presented in this video. USE AT YOUR OWN RISK.
Background Music:
"The Place Inside" by Silent Partner (royalty-free) from YouTube Audio Library.
This video uses material/images from https://en.wikipedia.org/wiki/Metallicity, which is released under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . This video is licensed under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . To reuse/adapt the content in your own work, you must comply with the license terms.
- published: 29 Sep 2015
- views: 79
Star metallicity & Gamma Ray Bursts - Danger Zone
- Order: Reorder
- Duration: 3:13
- Updated: 01 May 2016
- views: 3292
Still on the topic of WR 104, astronomers look at the correlational between the amount of metals present versus the rate of Gamma Ray Burst events. It seems tha...
Still on the topic of WR 104, astronomers look at the correlational between the amount of metals present versus the rate of Gamma Ray Burst events. It seems that although stars may still undergo a supernova, the rotational speeds are reduced the heavier the star therefore less chance of them resulting in a Gamma Ray Burst.
Still the million dollar question is... Are we in flying into the danger zone?
NEXT: The Death Star galaxy 3C321 makes systems like WR 104 look like nothing: https://www.youtube.com/watch?v=cberEfe698A
Suggested WR104 videos:
"WR 104: Looking down the barrel - Supernova or Gamma Ray Burst?"
https://www.youtube.com/watch?v=cI6fW5i_JhU
"WR 104: A real life death star system - Wolf Rayet Stars"
https://www.youtube.com/watch?v=uiL6lKYo-YY
More cool shorts like this in the 'Short yet detailed' playlist: https://www.youtube.com/playlist?list=PLke8o-yBwNzFFJDYBpj4a1i1mymSphFWA
Star metallicity & Gamma Ray Bursts - Danger Zone
Purely for educational purposes.
stargazer.
wn.com/Star Metallicity Gamma Ray Bursts Danger Zone
Still on the topic of WR 104, astronomers look at the correlational between the amount of metals present versus the rate of Gamma Ray Burst events. It seems that although stars may still undergo a supernova, the rotational speeds are reduced the heavier the star therefore less chance of them resulting in a Gamma Ray Burst.
Still the million dollar question is... Are we in flying into the danger zone?
NEXT: The Death Star galaxy 3C321 makes systems like WR 104 look like nothing: https://www.youtube.com/watch?v=cberEfe698A
Suggested WR104 videos:
"WR 104: Looking down the barrel - Supernova or Gamma Ray Burst?"
https://www.youtube.com/watch?v=cI6fW5i_JhU
"WR 104: A real life death star system - Wolf Rayet Stars"
https://www.youtube.com/watch?v=uiL6lKYo-YY
More cool shorts like this in the 'Short yet detailed' playlist: https://www.youtube.com/playlist?list=PLke8o-yBwNzFFJDYBpj4a1i1mymSphFWA
Star metallicity & Gamma Ray Bursts - Danger Zone
Purely for educational purposes.
stargazer.
- published: 01 May 2016
- views: 3292
Mass-metallicity relation for galaxies calibrated: Brown et al. (2016) OSU Astronomy Coffee Brief
- Order: Reorder
- Duration: 3:07
- Updated: 02 Feb 2016
- views: 201
This is an OSU Astronomy "Coffee Brief" for the Brown et al. (2016) paper "A Recalibration of Strong Line Oxygen Abundance Diagnostics via the Direct Method and...
This is an OSU Astronomy "Coffee Brief" for the Brown et al. (2016) paper "A Recalibration of Strong Line Oxygen Abundance Diagnostics via the Direct Method and Implications for the High Redshift Universe" posted on astro-ph on February 4, 2016.
wn.com/Mass Metallicity Relation For Galaxies Calibrated Brown Et Al. (2016) Osu Astronomy Coffee Brief
What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanation
- Order: Reorder
- Duration: 3:09
- Updated: 22 Aug 2016
- views: 21
What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanation.
In astronomy and physical cosmology, the metallicity or Z is th...
What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanation.
In astronomy and physical cosmology, the metallicity or Z is the fraction of mass of a star or other kind of astronomical object that is not in hydrogen (X) or helium (Y). Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers use the word "metals" as a convenient short term for "all elements except hydrogen and helium". This usage is distinct from the usual physical definition of a solid metal. The rationale for the astronomical usage is that in the high-temperature and pressure environment of a star, atoms do not undergo chemical reactions and effectively have no chemical properties, including that of being a metal as usually understood. For example, stars and nebulae with relatively high abundances of carbon, nitrogen, oxygen, and neon are called "metal-rich" in astrophysical terms, even though those elements are non-metals in chemistry.
The distinction between hydrogen and helium on the one hand and metals on the other is relevant because the primordial universe is believed to have contained virtually no metals, which were later synthesised within stars.
Metallicity within stars and other astronomical objects is an approximate estimation of their chemical abundances that change over time by the mechanisms of stellar evolution, and therefore provide an indication of their age. In cosmological terms, the universe is chemically evolving. According to the Big Bang Theory, the early universe first consisted of hydrogen and helium, with trace amounts of lithium and beryllium, but no heavier elements. Through the process of stellar evolution stars first generate energy by synthesising metals from hydrogen and helium by nuclear reactions, then disperse most of their mass by stellar winds or explode as supernovae, dispersing the new metals into the universe. It is believed that older generations of stars generally have lower metallicities than those of younger generations, having been formed in the metal-poor early universe.
Observed changes in the chemical abundances of different types of stars, based on the spectral peculiarities that were later attributed to metallicity, led astronomer Walter Baade in 1944 to propose the existence of two different populations of stars. These became commonly known as Population I (metal-rich) and Population II (metal-poor) stars. A third stellar population was introduced in 1978, known as Population III stars. These extremely metal-poor stars were theorised to have been the 'first-born' stars created in the universe.
wn.com/What Is Metallicity What Does Metallicity Mean Metallicity Meaning, Definition Explanation
What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanation.
In astronomy and physical cosmology, the metallicity or Z is the fraction of mass of a star or other kind of astronomical object that is not in hydrogen (X) or helium (Y). Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers use the word "metals" as a convenient short term for "all elements except hydrogen and helium". This usage is distinct from the usual physical definition of a solid metal. The rationale for the astronomical usage is that in the high-temperature and pressure environment of a star, atoms do not undergo chemical reactions and effectively have no chemical properties, including that of being a metal as usually understood. For example, stars and nebulae with relatively high abundances of carbon, nitrogen, oxygen, and neon are called "metal-rich" in astrophysical terms, even though those elements are non-metals in chemistry.
The distinction between hydrogen and helium on the one hand and metals on the other is relevant because the primordial universe is believed to have contained virtually no metals, which were later synthesised within stars.
Metallicity within stars and other astronomical objects is an approximate estimation of their chemical abundances that change over time by the mechanisms of stellar evolution, and therefore provide an indication of their age. In cosmological terms, the universe is chemically evolving. According to the Big Bang Theory, the early universe first consisted of hydrogen and helium, with trace amounts of lithium and beryllium, but no heavier elements. Through the process of stellar evolution stars first generate energy by synthesising metals from hydrogen and helium by nuclear reactions, then disperse most of their mass by stellar winds or explode as supernovae, dispersing the new metals into the universe. It is believed that older generations of stars generally have lower metallicities than those of younger generations, having been formed in the metal-poor early universe.
Observed changes in the chemical abundances of different types of stars, based on the spectral peculiarities that were later attributed to metallicity, led astronomer Walter Baade in 1944 to propose the existence of two different populations of stars. These became commonly known as Population I (metal-rich) and Population II (metal-poor) stars. A third stellar population was introduced in 1978, known as Population III stars. These extremely metal-poor stars were theorised to have been the 'first-born' stars created in the universe.
- published: 22 Aug 2016
- views: 21
The Problem with Metallicity, Stellar Metamorphosis
- Order: Reorder
- Duration: 8:54
- Updated: 31 May 2015
- views: 59
- published: 31 May 2015
- views: 59
Duncan Forbes "Metallicity maps of galaxies in observations and simulations"
- Order: Reorder
- Duration: 20:50
- Updated: 15 Aug 2013
- views: 64
Duncan Forbes, Swinburne, "Metallicity maps of galaxies in observations and simulations"
2013 Santa Cruz Galaxy Workshop
University of California, Santa Cruz
...
Duncan Forbes, Swinburne, "Metallicity maps of galaxies in observations and simulations"
2013 Santa Cruz Galaxy Workshop
University of California, Santa Cruz
http://hipacc.ucsc.edu/GalaxyWorkshop...
August 15, 2013
wn.com/Duncan Forbes Metallicity Maps Of Galaxies In Observations And Simulations
Duncan Forbes, Swinburne, "Metallicity maps of galaxies in observations and simulations"
2013 Santa Cruz Galaxy Workshop
University of California, Santa Cruz
http://hipacc.ucsc.edu/GalaxyWorkshop...
August 15, 2013
- published: 15 Aug 2013
- views: 64
test8 "Metallicity"
- Order: Reorder
- Duration: 3:16
- Updated: 14 Sep 2013
- views: 88
t8-13#4
t8-13#4
wn.com/Test8 Metallicity
t8-13#4
- published: 14 Sep 2013
- views: 88
Bryce Experiments - Metallicity and Specular Halo - by David Brinnen.
- Order: Reorder
- Duration: 8:32
- Updated: 08 May 2013
- views: 188
A Bryce 7.1 Pro tutorial aimed at people who are very well versed in Bryce and wish to expand their skills. Exploring material properties and creating a soft p...
A Bryce 7.1 Pro tutorial aimed at people who are very well versed in Bryce and wish to expand their skills. Exploring material properties and creating a soft pearlescent sheen material effect as a result. Be aware, this video is more experiment than tutorial, hence my suggestion that it is aimed at more advanced users.
Some additional text is included in the video, you may have to pause the video to read it.
Better viewed in HD - some of the controls in Bryce are quite fiddly and small.
For more tutorials visit http://www.bryce-tutorials.info/
wn.com/Bryce Experiments Metallicity And Specular Halo By David Brinnen.
A Bryce 7.1 Pro tutorial aimed at people who are very well versed in Bryce and wish to expand their skills. Exploring material properties and creating a soft pearlescent sheen material effect as a result. Be aware, this video is more experiment than tutorial, hence my suggestion that it is aimed at more advanced users.
Some additional text is included in the video, you may have to pause the video to read it.
Better viewed in HD - some of the controls in Bryce are quite fiddly and small.
For more tutorials visit http://www.bryce-tutorials.info/
- published: 08 May 2013
- views: 188
Stars, Gas, Temperature and Metallicity in the Illustris Simulation
- Order: Reorder
- Duration: 2:24
- Updated: 25 Mar 2016
- views: 235
According to the Illustris simulation, this is a four-panel display of the same ~33 million light year on-a-side cube in space. What started out as an overdense...
According to the Illustris simulation, this is a four-panel display of the same ~33 million light year on-a-side cube in space. What started out as an overdense region grew into a region filled with stars, gas, galaxies and more. The evolution takes place from high redshift (~z = 10) and comes all the way to the present day (z = 0).
The upper left panel shows stellar light, the upper right panel shows the gas density, the lower left panel shows gas temperature, while the lower-right panel shows the evolution of metallicity, which measures the abundance of heavy elements (heavier than helium) in each region of space.
Credit: The Illustris Simulation / Illustris Collaboration. More at: http://www.illustris-project.org/media/.
wn.com/Stars, Gas, Temperature And Metallicity In The Illustris Simulation
According to the Illustris simulation, this is a four-panel display of the same ~33 million light year on-a-side cube in space. What started out as an overdense region grew into a region filled with stars, gas, galaxies and more. The evolution takes place from high redshift (~z = 10) and comes all the way to the present day (z = 0).
The upper left panel shows stellar light, the upper right panel shows the gas density, the lower left panel shows gas temperature, while the lower-right panel shows the evolution of metallicity, which measures the abundance of heavy elements (heavier than helium) in each region of space.
Credit: The Illustris Simulation / Illustris Collaboration. More at: http://www.illustris-project.org/media/.
- published: 25 Mar 2016
- views: 235
-
Metallicity Video Learning WizScience com
The Universe Exploration : Strange Astronomy Facts of Inner Planets Full Documentary Films (2016) Introduction to Astronomy: Crash Course Astronomy A new era of Astronomy Begins - Biggest Black Holes and Cosmic Monsters - Space Documentary 2016 Neil deGrasse Tyson's Lecture about Astronomy, Science (AMAZING & HILARIOUS) Life in The Universe Documentary | HD 1080p Gravitational Waves: A New Era of Astronomy Begins Milky Way secret facts , full Astronomy Documentary Astronomy: Beautiful Documentaries (Full Length) Eyes on the sky: Astronomy - Celebrating the 400th anniversary of the telescope NASA Astronomy Video: Tour of the Moon - A detailed view of the lunar surface What is the biggest star in the Universe ✶ Astronomy Space Documentary 2016 Discovery 100 Greatest Discoveries 1of9 Astrono...
published: 23 Oct 2016 -
Metallicity in a Cosmological Simulation
Here the metallicity of gas in a hydrodynamical cosmology simulation is shown. There are 128^3 gas particles in this volume, and the metallicity is projected into 2D from 3D. The simulation software GIZMO was used, along with the new mesh-free methods.
published: 18 Sep 2016 -
Metallicity
In astronomy and physical cosmology, the metallicity or Z is the fraction of mass of a star or other kind of astronomical object that is not in hydrogen or helium .Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers use the word "metals" as a convenient short term for "all elements except hydrogen and helium".This usage is distinct from the usual physical definition of a solid metal.The rationale for the astronomical usage is that in the high-temperature and pressure environment of a star, atoms do not undergo chemical reactions and effectively have no chemical properties, including that of being a metal as usually understood. ---Image-Copyright-and-Permission--- About the author(s): NASA, The Hubble Heritage Team, STScI, AURA License: Public ...
published: 31 Aug 2016 -
Tiffany Hsyu : Searching for the lowest metallicity galaxies
published: 09 Aug 2016 -
Zheng Zheng : Environmental dependence of galaxy metallicity and age gradients
published: 09 Aug 2016 -
Xiangcheng Ma : The origin of metallicity gradient in galaxies
published: 09 Aug 2016 -
Star metallicity & Gamma Ray Bursts Danger Zone
published: 30 Jun 2016 -
Evolution of Different Metallicity Stars off the Main Sequence
A video I made for a stellar structure assignment showing how stars of varying metallicities evolve off of the main sequence. The stellar evolution models come from EZ-WEB (http://www.astro.wisc.edu/~townsend/static.php?ref=ez-web) and the video was done in Python.
published: 21 Apr 2016
Metallicity Video Learning WizScience com
- Order: Reorder
- Duration: 2:19
- Updated: 23 Oct 2016
- views: 0
The Universe Exploration : Strange Astronomy Facts of Inner Planets Full Documentary Films (2016)
Introduction to Astronomy: Crash Course Astronomy
A new era o...
The Universe Exploration : Strange Astronomy Facts of Inner Planets Full Documentary Films (2016)
Introduction to Astronomy: Crash Course Astronomy
A new era of Astronomy Begins - Biggest Black Holes and Cosmic Monsters - Space Documentary 2016
Neil deGrasse Tyson's Lecture about Astronomy, Science (AMAZING & HILARIOUS)
Life in The Universe Documentary | HD 1080p
Gravitational Waves: A New Era of Astronomy Begins
Milky Way secret facts , full Astronomy Documentary
Astronomy: Beautiful Documentaries (Full Length)
Eyes on the sky: Astronomy - Celebrating the 400th anniversary of the telescope
NASA Astronomy Video: Tour of the Moon - A detailed view of the lunar surface
What is the biggest star in the Universe ✶ Astronomy Space Documentary 2016
Discovery 100 Greatest Discoveries 1of9 Astronomy DivX AC3 720P
Introduction to Astronomy
Supernova | COSMOS - Astronomy documentary
Space travel : Deep Space Exploration | Astronomy 2016
The 1995 Hubble photo that changed astronomy
Dark Matter: Crash Course Astronomy
100 Greatest Discoveries - Astronomy - Bill Nye
Everything, The Universe...And Life: Crash Course Astronomy
Black Holes: Crash Course Astronomy
Telescopes: Crash Course Astronomy
New Astronomy Technique Reveals Monster at the Center of the Milky Way
Colossal Black Holes - Astronomy Documentary on the Universe's Gargantuan Black Holes HD
Ancient Maya — Tools of Astronomy
Deep Time: Crash Course Astronomy
Hubble Telescope Images: Deep Field View of Space: Nasa Videos: Astronomy Documentary
Distances: Crash Course Astronomy
Popular Videos - Astronomy & Documentary Movies
Metallica - Astronomy
Astronomy/Astrophysics Docs
The Next Big Questions in Astronomy - Professor Carolin Crawford
Astronomy→ A Day on Earth Explained ~ An Animated Guide
Neutron Stars: Crash Course Astronomy
10 Rare Astronomical Events
Mercury: Crash Course Astronomy
The New Cosmos: Answering Astronomy's Big Questions
The Universe Exploration : Strange Astronomy Facts of Inner Planets Full Documentary Films (2016)
Introduction to Astronomy: Crash Course Astronomy
A new era of Astronomy Begins - Biggest Black Holes and Cosmic Monsters - Space Documentary 2016
Neil deGrasse Tyson's Lecture about Astronomy, Science (AMAZING & HILARIOUS)
Life in The Universe Documentary | HD 1080p
Gravitational Waves: A New Era of Astronomy Begins
Milky Way secret facts , full Astronomy Documentary
Astronomy: Beautiful Documentaries (Full Length)
Eyes on the sky: Astronomy - Celebrating the 400th anniversary of the telescope
NASA Astronomy Video: Tour of the Moon - A detailed view of the lunar surface
What is the biggest star in the Universe ✶ Astronomy Space Documentary 2016
Discovery 100 Greatest Discoveries 1of9 Astronomy DivX AC3 720P
Introduction to Astronomy
Supernova | COSMOS - Astronomy documentary
Space travel : Deep Space Exploration | Astronomy 2016
The 1995 Hubble photo that changed astronomy
Dark Matter: Crash Course Astronomy
100 Greatest Discoveries - Astronomy - Bill Nye
Everything, The Universe...And Life: Crash Course Astronomy
Black Holes: Crash Course Astronomy
Telescopes: Crash Course Astronomy
New Astronomy Technique Reveals Monster at the Center of the Milky Way
Colossal Black Holes - Astronomy Documentary on the Universe's Gargantuan Black Holes HD
Ancient Maya — Tools of Astronomy
Deep Time: Crash Course Astronomy
Hubble Telescope Images: Deep Field View of Space: Nasa Videos: Astronomy Documentary
Distances: Crash Course Astronomy
Popular Videos - Astronomy & Documentary Movies
Metallica - Astronomy
Astronomy/Astrophysics Docs
The Next Big Questions in Astronomy - Professor Carolin Crawford
Astronomy→ A Day on Earth Explained ~ An Animated Guide
Neutron Stars: Crash Course Astronomy
10 Rare Astronomical Events
Mercury: Crash Course Astronomy
The New Cosmos: Answering Astronomy's Big Questions
The Universe Exploration : Strange Astronomy Facts of Inner Planets Full Documentary Films (2016)
Introduction to Astronomy: Crash Course Astronomy
A new era of Astronomy Begins - Biggest Black Holes and Cosmic Monsters - Space Documentary 2016
Neil deGrasse Tyson's Lecture about Astronomy, Science (AMAZING & HILARIOUS)
Life in The Universe Documentary | HD 1080p
Gravitational Waves: A New Era of Astronomy Begins
Milky Way secret facts , full Astronomy Documentary
Astronomy: Beautiful Documentaries (Full Length)
Eyes on the sky: Astronomy - Celebrating the 400th anniversary of the telescope
NASA Astronomy Video: Tour of the Moon - A detailed view of the lunar surface
What is the biggest star in the Universe ✶ Astronomy Space Documentary 2016
Discovery 100 Greatest Discoveries 1of9 Astronomy DivX AC3 720P
Introduction to Astronomy
Supernova | COSMOS - Astronomy documentary
Space travel : Deep Space Exploration | Astronomy 2016
wn.com/Metallicity Video Learning Wizscience Com
The Universe Exploration : Strange Astronomy Facts of Inner Planets Full Documentary Films (2016)
Introduction to Astronomy: Crash Course Astronomy
A new era of Astronomy Begins - Biggest Black Holes and Cosmic Monsters - Space Documentary 2016
Neil deGrasse Tyson's Lecture about Astronomy, Science (AMAZING & HILARIOUS)
Life in The Universe Documentary | HD 1080p
Gravitational Waves: A New Era of Astronomy Begins
Milky Way secret facts , full Astronomy Documentary
Astronomy: Beautiful Documentaries (Full Length)
Eyes on the sky: Astronomy - Celebrating the 400th anniversary of the telescope
NASA Astronomy Video: Tour of the Moon - A detailed view of the lunar surface
What is the biggest star in the Universe ✶ Astronomy Space Documentary 2016
Discovery 100 Greatest Discoveries 1of9 Astronomy DivX AC3 720P
Introduction to Astronomy
Supernova | COSMOS - Astronomy documentary
Space travel : Deep Space Exploration | Astronomy 2016
The 1995 Hubble photo that changed astronomy
Dark Matter: Crash Course Astronomy
100 Greatest Discoveries - Astronomy - Bill Nye
Everything, The Universe...And Life: Crash Course Astronomy
Black Holes: Crash Course Astronomy
Telescopes: Crash Course Astronomy
New Astronomy Technique Reveals Monster at the Center of the Milky Way
Colossal Black Holes - Astronomy Documentary on the Universe's Gargantuan Black Holes HD
Ancient Maya — Tools of Astronomy
Deep Time: Crash Course Astronomy
Hubble Telescope Images: Deep Field View of Space: Nasa Videos: Astronomy Documentary
Distances: Crash Course Astronomy
Popular Videos - Astronomy & Documentary Movies
Metallica - Astronomy
Astronomy/Astrophysics Docs
The Next Big Questions in Astronomy - Professor Carolin Crawford
Astronomy→ A Day on Earth Explained ~ An Animated Guide
Neutron Stars: Crash Course Astronomy
10 Rare Astronomical Events
Mercury: Crash Course Astronomy
The New Cosmos: Answering Astronomy's Big Questions
The Universe Exploration : Strange Astronomy Facts of Inner Planets Full Documentary Films (2016)
Introduction to Astronomy: Crash Course Astronomy
A new era of Astronomy Begins - Biggest Black Holes and Cosmic Monsters - Space Documentary 2016
Neil deGrasse Tyson's Lecture about Astronomy, Science (AMAZING & HILARIOUS)
Life in The Universe Documentary | HD 1080p
Gravitational Waves: A New Era of Astronomy Begins
Milky Way secret facts , full Astronomy Documentary
Astronomy: Beautiful Documentaries (Full Length)
Eyes on the sky: Astronomy - Celebrating the 400th anniversary of the telescope
NASA Astronomy Video: Tour of the Moon - A detailed view of the lunar surface
What is the biggest star in the Universe ✶ Astronomy Space Documentary 2016
Discovery 100 Greatest Discoveries 1of9 Astronomy DivX AC3 720P
Introduction to Astronomy
Supernova | COSMOS - Astronomy documentary
Space travel : Deep Space Exploration | Astronomy 2016
The 1995 Hubble photo that changed astronomy
Dark Matter: Crash Course Astronomy
100 Greatest Discoveries - Astronomy - Bill Nye
Everything, The Universe...And Life: Crash Course Astronomy
Black Holes: Crash Course Astronomy
Telescopes: Crash Course Astronomy
New Astronomy Technique Reveals Monster at the Center of the Milky Way
Colossal Black Holes - Astronomy Documentary on the Universe's Gargantuan Black Holes HD
Ancient Maya — Tools of Astronomy
Deep Time: Crash Course Astronomy
Hubble Telescope Images: Deep Field View of Space: Nasa Videos: Astronomy Documentary
Distances: Crash Course Astronomy
Popular Videos - Astronomy & Documentary Movies
Metallica - Astronomy
Astronomy/Astrophysics Docs
The Next Big Questions in Astronomy - Professor Carolin Crawford
Astronomy→ A Day on Earth Explained ~ An Animated Guide
Neutron Stars: Crash Course Astronomy
10 Rare Astronomical Events
Mercury: Crash Course Astronomy
The New Cosmos: Answering Astronomy's Big Questions
The Universe Exploration : Strange Astronomy Facts of Inner Planets Full Documentary Films (2016)
Introduction to Astronomy: Crash Course Astronomy
A new era of Astronomy Begins - Biggest Black Holes and Cosmic Monsters - Space Documentary 2016
Neil deGrasse Tyson's Lecture about Astronomy, Science (AMAZING & HILARIOUS)
Life in The Universe Documentary | HD 1080p
Gravitational Waves: A New Era of Astronomy Begins
Milky Way secret facts , full Astronomy Documentary
Astronomy: Beautiful Documentaries (Full Length)
Eyes on the sky: Astronomy - Celebrating the 400th anniversary of the telescope
NASA Astronomy Video: Tour of the Moon - A detailed view of the lunar surface
What is the biggest star in the Universe ✶ Astronomy Space Documentary 2016
Discovery 100 Greatest Discoveries 1of9 Astronomy DivX AC3 720P
Introduction to Astronomy
Supernova | COSMOS - Astronomy documentary
Space travel : Deep Space Exploration | Astronomy 2016
- published: 23 Oct 2016
- views: 0
Metallicity in a Cosmological Simulation
- Order: Reorder
- Duration: 0:21
- Updated: 18 Sep 2016
- views: 5
Here the metallicity of gas in a hydrodynamical cosmology simulation is shown. There are 128^3 gas particles in this volume, and the metallicity is projected in...
Here the metallicity of gas in a hydrodynamical cosmology simulation is shown. There are 128^3 gas particles in this volume, and the metallicity is projected into 2D from 3D. The simulation software GIZMO was used, along with the new mesh-free methods.
wn.com/Metallicity In A Cosmological Simulation
Here the metallicity of gas in a hydrodynamical cosmology simulation is shown. There are 128^3 gas particles in this volume, and the metallicity is projected into 2D from 3D. The simulation software GIZMO was used, along with the new mesh-free methods.
- published: 18 Sep 2016
- views: 5
Metallicity
- Order: Reorder
- Duration: 3:03
- Updated: 31 Aug 2016
- views: 0
In astronomy and physical cosmology, the metallicity or Z is the fraction of mass of a star or other kind of astronomical object that is not in hydrogen or heli...
In astronomy and physical cosmology, the metallicity or Z is the fraction of mass of a star or other kind of astronomical object that is not in hydrogen or helium .Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers use the word "metals" as a convenient short term for "all elements except hydrogen and helium".This usage is distinct from the usual physical definition of a solid metal.The rationale for the astronomical usage is that in the high-temperature and pressure environment of a star, atoms do not undergo chemical reactions and effectively have no chemical properties, including that of being a metal as usually understood.
---Image-Copyright-and-Permission---
About the author(s): NASA, The Hubble Heritage Team, STScI, AURA
License: Public domain
---Image-Copyright-and-Permission---
This channel is dedicated to make Wikipedia, one of the biggest knowledge databases in the world available to people with limited vision.
Article available under a Creative Commons license
Image source in video
wn.com/Metallicity
In astronomy and physical cosmology, the metallicity or Z is the fraction of mass of a star or other kind of astronomical object that is not in hydrogen or helium .Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers use the word "metals" as a convenient short term for "all elements except hydrogen and helium".This usage is distinct from the usual physical definition of a solid metal.The rationale for the astronomical usage is that in the high-temperature and pressure environment of a star, atoms do not undergo chemical reactions and effectively have no chemical properties, including that of being a metal as usually understood.
---Image-Copyright-and-Permission---
About the author(s): NASA, The Hubble Heritage Team, STScI, AURA
License: Public domain
---Image-Copyright-and-Permission---
This channel is dedicated to make Wikipedia, one of the biggest knowledge databases in the world available to people with limited vision.
Article available under a Creative Commons license
Image source in video
- published: 31 Aug 2016
- views: 0
Tiffany Hsyu : Searching for the lowest metallicity galaxies
- Order: Reorder
- Duration: 10:37
- Updated: 09 Aug 2016
- views: 6
- published: 09 Aug 2016
- views: 6
Zheng Zheng : Environmental dependence of galaxy metallicity and age gradients
- Order: Reorder
- Duration: 18:50
- Updated: 09 Aug 2016
- views: 10
- published: 09 Aug 2016
- views: 10
Xiangcheng Ma : The origin of metallicity gradient in galaxies
- Order: Reorder
- Duration: 13:45
- Updated: 09 Aug 2016
- views: 14
- published: 09 Aug 2016
- views: 14
Star metallicity & Gamma Ray Bursts Danger Zone
- Order: Reorder
- Duration: 3:13
- Updated: 30 Jun 2016
- views: 0
- published: 30 Jun 2016
- views: 0
Evolution of Different Metallicity Stars off the Main Sequence
- Order: Reorder
- Duration: 8:21
- Updated: 21 Apr 2016
- views: 11
A video I made for a stellar structure assignment showing how stars of varying metallicities evolve off of the main sequence. The stellar evolution models come ...
A video I made for a stellar structure assignment showing how stars of varying metallicities evolve off of the main sequence. The stellar evolution models come from EZ-WEB (http://www.astro.wisc.edu/~townsend/static.php?ref=ez-web) and the video was done in Python.
wn.com/Evolution Of Different Metallicity Stars Off The Main Sequence
-
CITA 380: Low metallicity star formation: a nursery for compact binary mergers?
Title: Low metallicity star formation: a nursery for compact binary mergers? Speaker: Richard O'Shaughnessy (U. of Wisconsim, Milwaukee) Date: 2011-10-05 Slides: http://www.cita.utoronto.ca/presentations/380.pdf
published: 05 Feb 2014 -
Investigating the Pressure Support and Metallicity Bimodality of the CGM - Cameron Hummels
published: 21 Aug 2014 -
Keck Science Meeting 2012 Session 6
Talks in Session 6: 00:00:33 Marc Rafelski (Caltech/IPAC): "Metallicity of Damped Ly-alpha Systems out to z~5" 00:15:48 Janet Colucci (UCSC): "The Detailed Chemical Abundance Patterns of M31 Globular Clusters" 00:30:45 Jason Melbourne (Caltech): "Constraints on the colors and luminosities of high-mass, low-metallicity AGB stars from Keck Adaptive Optics" 00:46:28 Brendan Bowler (U. Hawaii): "A High Contrast Adaptive Optics Imaging Search for Giant Planets Around Young M Dwarfs" 01:00:03 Anne Medling (UCSC): "Nuclear Disks in Nearby Gas-Rich Mergers" 01:15:22 Chris Gelino (NExScI/Caltech): "The Discovery and Characterization of the Coldest WISE Brown Dwarfs with Keck"
published: 21 Sep 2012 -
Searching for low-mass planets around metal-poor stars - Joao Faria
Stellar metallicity and planet formation are intimately linked. Theoretical work based on the core accretion model predicts that planets in the Neptune-mass regime should be common around stars with a wide range of metallicities, while giant planets should be more common around metal-rich stars. But the existence of a planet-metallicity relation for low-mass planets is not yet fully confirmed and quantified. We have been using HARPS observations to study a sample of moderately metal-poor stars. Our goal is to detect low-mass planets, in the Earth and Neptune mass regimes, and estimate their frequency around low-metallicity stars. I will present the results of this decade-long search, explain the difficulties that stellar activity poses for planet detection and show how the small number of ...
published: 20 Oct 2016 -
-
The Dwarf Galaxy Zoo
Harvard-Smithsonian Center for Astrophysics The Dwarf Galaxy Zoo Gurtina Besla December 5, 2013 Dwarf galaxies are the most numerous type of galaxy in our universe. These low mass, low metallicity galaxies encompass a wide range of morphologies, gas fractions and star formation properties. Yet it is unclear how or if these different subtypes are evolutionarily linked. Being low in mass, dwarf galaxies are more prone to environmental factors (tides, ram pressure stripping), which can facilitate morphological transformations. But is environment the only factor? What about dwarf galaxies in the most isolated environments? Do interactions between dwarf galaxies themselves play a role? I'll provide an overview of the veritable zoo of dwarf galaxy subtypes and our current understanding of their...
published: 10 Dec 2013 -
Characterizing the Coldest Exoplanets - Andrew Skemer (SETI Talks 2016)
The coldest known exoplanets are still much hotter than the gas giant planets in our own Solar System. Pushing to colder temperatures requires observing in the thermal infrared (3-5 microns) where self-luminous gas-giants peak in brightness. Dr. Skemer will present observational studies characterizing the atmospheres of the coldest exoplanets and the coldest brown dwarf. These observations include a planet whose metallicity is higher than its host star, and a 250 K brown dwarf which shows signs of water clouds. Additionally, he will describe a new instrument that can obtain spectroscopy of directly imaged planets from 3-5 microns.
published: 29 Aug 2016 -
Minecraft: Walls with Legends and Ahbstract: Bear Grylls survival strats
I hope you enjoyed the video! Hypixel ip: mc.hypixel.net Legends Channel: https://www.youtube.com/channel/UCMosGVHbVOqlrWK4hIIvD0w Ahbstracts: https://www.youtube.com/channel/UC7xpmz-DtbC-Qyvk_gUnA2g Music Provided by NoCopyrightSounds: DEAF KEV - Invincible: https://www.youtube.com/watch?v=J2X5mJ3HDYE DEAF KEV: https://soundcloud.com/nocopyrightsounds/deaf-kev-invincible-ncs-release
published: 09 Jan 2016 -
Documentary Films: The Search for Earth Like Planets
Documentary Films: The Search for Earth Like Planets The first exoplanet to be observed circling a Sun-like star was an enormous roaster, spotted by two Swiss astronomers who made the historic discovery back in 1995. Since then, around 1800 exoplanets orbiting stars beyond our Sun have been detected, bringing with them a treasure trove of information describing many rich and strange alien worlds for astronomers to pour over. In May 2014, a team of astronomers at Vanderbilt University in Nashville, Tennessee, announced their bizarre discovery that some faraway Sun-like stars, inhabiting our Milky Way Galaxy, hungrily devour tasty Earth-like planets that circle them in searing-hot, close-in orbits. These "Earth-eaters," during their development, snack on large quantities of the rocky stuff ...
published: 01 Aug 2014
CITA 380: Low metallicity star formation: a nursery for compact binary mergers?
- Order: Reorder
- Duration: 60:29
- Updated: 05 Feb 2014
- views: 25
Title: Low metallicity star formation: a nursery for compact binary mergers?
Speaker: Richard O'Shaughnessy (U. of Wisconsim, Milwaukee)
Date: 2011-10-05
Slides...
Title: Low metallicity star formation: a nursery for compact binary mergers?
Speaker: Richard O'Shaughnessy (U. of Wisconsim, Milwaukee)
Date: 2011-10-05
Slides: http://www.cita.utoronto.ca/presentations/380.pdf
wn.com/Cita 380 Low Metallicity Star Formation A Nursery For Compact Binary Mergers
Investigating the Pressure Support and Metallicity Bimodality of the CGM - Cameron Hummels
- Order: Reorder
- Duration: 23:20
- Updated: 21 Aug 2014
- views: 19
- published: 21 Aug 2014
- views: 19
Keck Science Meeting 2012 Session 6
- Order: Reorder
- Duration: 92:39
- Updated: 21 Sep 2012
- views: 198
Talks in Session 6:
00:00:33 Marc Rafelski (Caltech/IPAC): "Metallicity of Damped Ly-alpha Systems out to z~5"
00:15:48 Janet Colucci (UCSC): "The Detailed Chem...
Talks in Session 6:
00:00:33 Marc Rafelski (Caltech/IPAC): "Metallicity of Damped Ly-alpha Systems out to z~5"
00:15:48 Janet Colucci (UCSC): "The Detailed Chemical Abundance Patterns of M31 Globular Clusters"
00:30:45 Jason Melbourne (Caltech): "Constraints on the colors and luminosities of high-mass, low-metallicity AGB stars from Keck Adaptive Optics"
00:46:28 Brendan Bowler (U. Hawaii): "A High Contrast Adaptive Optics Imaging Search for Giant Planets Around Young M Dwarfs"
01:00:03 Anne Medling (UCSC): "Nuclear Disks in Nearby Gas-Rich Mergers"
01:15:22 Chris Gelino (NExScI/Caltech): "The Discovery and Characterization of the Coldest WISE Brown Dwarfs with Keck"
wn.com/Keck Science Meeting 2012 Session 6
Talks in Session 6:
00:00:33 Marc Rafelski (Caltech/IPAC): "Metallicity of Damped Ly-alpha Systems out to z~5"
00:15:48 Janet Colucci (UCSC): "The Detailed Chemical Abundance Patterns of M31 Globular Clusters"
00:30:45 Jason Melbourne (Caltech): "Constraints on the colors and luminosities of high-mass, low-metallicity AGB stars from Keck Adaptive Optics"
00:46:28 Brendan Bowler (U. Hawaii): "A High Contrast Adaptive Optics Imaging Search for Giant Planets Around Young M Dwarfs"
01:00:03 Anne Medling (UCSC): "Nuclear Disks in Nearby Gas-Rich Mergers"
01:15:22 Chris Gelino (NExScI/Caltech): "The Discovery and Characterization of the Coldest WISE Brown Dwarfs with Keck"
- published: 21 Sep 2012
- views: 198
Searching for low-mass planets around metal-poor stars - Joao Faria
- Order: Reorder
- Duration: 68:21
- Updated: 20 Oct 2016
- views: 3
Stellar metallicity and planet formation are intimately linked. Theoretical work based on the core accretion model predicts that planets in the Neptune-mass reg...
Stellar metallicity and planet formation are intimately linked. Theoretical work based on the core accretion model predicts that planets in the Neptune-mass regime should be common around stars with a wide range of metallicities, while giant planets should be more common around metal-rich stars. But the existence of a planet-metallicity relation for low-mass planets is not yet fully confirmed and quantified. We have been using HARPS observations to study a sample of moderately metal-poor stars. Our goal is to detect low-mass planets, in the Earth and Neptune mass regimes, and estimate their frequency around low-metallicity stars. I will present the results of this decade-long search, explain the difficulties that stellar activity poses for planet detection and show how the small number of planets detected so far in our sample is challenging the predictions from the core-accretion formation model.
wn.com/Searching For Low Mass Planets Around Metal Poor Stars Joao Faria
Stellar metallicity and planet formation are intimately linked. Theoretical work based on the core accretion model predicts that planets in the Neptune-mass regime should be common around stars with a wide range of metallicities, while giant planets should be more common around metal-rich stars. But the existence of a planet-metallicity relation for low-mass planets is not yet fully confirmed and quantified. We have been using HARPS observations to study a sample of moderately metal-poor stars. Our goal is to detect low-mass planets, in the Earth and Neptune mass regimes, and estimate their frequency around low-metallicity stars. I will present the results of this decade-long search, explain the difficulties that stellar activity poses for planet detection and show how the small number of planets detected so far in our sample is challenging the predictions from the core-accretion formation model.
- published: 20 Oct 2016
- views: 3
CS GO Competitive #1 w/Jack
- Order: Reorder
- Duration: 41:06
- Updated: 29 Feb 2016
- views: 47
Stay tuned for more CS Go and Minecraft videos
Subscribe:
https://www.youtube.com/channel/UCA88FwQaWqz7Zl8chRAlMfw
Stay tuned for more CS Go and Minecraft videos
Subscribe:
https://www.youtube.com/channel/UCA88FwQaWqz7Zl8chRAlMfw
wn.com/Cs Go Competitive 1 W Jack
The Dwarf Galaxy Zoo
- Order: Reorder
- Duration: 60:15
- Updated: 10 Dec 2013
- views: 319
Harvard-Smithsonian Center for Astrophysics
The Dwarf Galaxy Zoo
Gurtina Besla
December 5, 2013
Dwarf galaxies are the most numerous type of galaxy in our univ...
Harvard-Smithsonian Center for Astrophysics
The Dwarf Galaxy Zoo
Gurtina Besla
December 5, 2013
Dwarf galaxies are the most numerous type of galaxy in our universe. These low mass, low metallicity galaxies encompass a wide range of morphologies, gas fractions and star formation properties. Yet it is unclear how or if these different subtypes are evolutionarily linked. Being low in mass, dwarf galaxies are more prone to environmental factors (tides, ram pressure stripping), which can facilitate morphological transformations. But is environment the only factor? What about dwarf galaxies in the most isolated environments? Do interactions between dwarf galaxies themselves play a role? I'll provide an overview of the veritable zoo of dwarf galaxy subtypes and our current understanding of their potential evolutionary links. I'll further outline preliminary results from our ongoing theoretical and multi-wavelength observational program to constrain the merger sequence of dwarf galaxies in isolated environments.
wn.com/The Dwarf Galaxy Zoo
Harvard-Smithsonian Center for Astrophysics
The Dwarf Galaxy Zoo
Gurtina Besla
December 5, 2013
Dwarf galaxies are the most numerous type of galaxy in our universe. These low mass, low metallicity galaxies encompass a wide range of morphologies, gas fractions and star formation properties. Yet it is unclear how or if these different subtypes are evolutionarily linked. Being low in mass, dwarf galaxies are more prone to environmental factors (tides, ram pressure stripping), which can facilitate morphological transformations. But is environment the only factor? What about dwarf galaxies in the most isolated environments? Do interactions between dwarf galaxies themselves play a role? I'll provide an overview of the veritable zoo of dwarf galaxy subtypes and our current understanding of their potential evolutionary links. I'll further outline preliminary results from our ongoing theoretical and multi-wavelength observational program to constrain the merger sequence of dwarf galaxies in isolated environments.
- published: 10 Dec 2013
- views: 319
Characterizing the Coldest Exoplanets - Andrew Skemer (SETI Talks 2016)
- Order: Reorder
- Duration: 69:39
- Updated: 29 Aug 2016
- views: 5464
The coldest known exoplanets are still much hotter than the gas giant planets in our own Solar System. Pushing to colder temperatures requires observing in the...
The coldest known exoplanets are still much hotter than the gas giant planets in our own Solar System. Pushing to colder temperatures requires observing in the thermal infrared (3-5 microns) where self-luminous gas-giants peak in brightness.
Dr. Skemer will present observational studies characterizing the atmospheres of the coldest exoplanets and the coldest brown dwarf. These observations include a planet whose metallicity is higher than its host star, and a 250 K brown dwarf which shows signs of water clouds. Additionally, he will describe a new instrument that can obtain spectroscopy of directly imaged planets from 3-5 microns.
wn.com/Characterizing The Coldest Exoplanets Andrew Skemer (Seti Talks 2016)
The coldest known exoplanets are still much hotter than the gas giant planets in our own Solar System. Pushing to colder temperatures requires observing in the thermal infrared (3-5 microns) where self-luminous gas-giants peak in brightness.
Dr. Skemer will present observational studies characterizing the atmospheres of the coldest exoplanets and the coldest brown dwarf. These observations include a planet whose metallicity is higher than its host star, and a 250 K brown dwarf which shows signs of water clouds. Additionally, he will describe a new instrument that can obtain spectroscopy of directly imaged planets from 3-5 microns.
- published: 29 Aug 2016
- views: 5464
Minecraft: Walls with Legends and Ahbstract: Bear Grylls survival strats
- Order: Reorder
- Duration: 29:29
- Updated: 09 Jan 2016
- views: 42
I hope you enjoyed the video!
Hypixel ip:
mc.hypixel.net
Legends Channel:
https://www.youtube.com/channel/UCMosGVHbVOqlrWK4hIIvD0w
Ahbstracts:
https://www.yo...
I hope you enjoyed the video!
Hypixel ip:
mc.hypixel.net
Legends Channel:
https://www.youtube.com/channel/UCMosGVHbVOqlrWK4hIIvD0w
Ahbstracts:
https://www.youtube.com/channel/UC7xpmz-DtbC-Qyvk_gUnA2g
Music Provided by NoCopyrightSounds:
DEAF KEV - Invincible: https://www.youtube.com/watch?v=J2X5mJ3HDYE
DEAF KEV:
https://soundcloud.com/nocopyrightsounds/deaf-kev-invincible-ncs-release
wn.com/Minecraft Walls With Legends And Ahbstract Bear Grylls Survival Strats
I hope you enjoyed the video!
Hypixel ip:
mc.hypixel.net
Legends Channel:
https://www.youtube.com/channel/UCMosGVHbVOqlrWK4hIIvD0w
Ahbstracts:
https://www.youtube.com/channel/UC7xpmz-DtbC-Qyvk_gUnA2g
Music Provided by NoCopyrightSounds:
DEAF KEV - Invincible: https://www.youtube.com/watch?v=J2X5mJ3HDYE
DEAF KEV:
https://soundcloud.com/nocopyrightsounds/deaf-kev-invincible-ncs-release
- published: 09 Jan 2016
- views: 42
Documentary Films: The Search for Earth Like Planets
- Order: Reorder
- Duration: 27:26
- Updated: 01 Aug 2014
- views: 1243
Documentary Films: The Search for Earth Like Planets
The first exoplanet to be observed circling a Sun-like star was an enormous roaster, spotted by two Swiss ...
Documentary Films: The Search for Earth Like Planets
The first exoplanet to be observed circling a Sun-like star was an enormous roaster, spotted by two Swiss astronomers who made the historic discovery back in 1995. Since then, around 1800 exoplanets orbiting stars beyond our Sun have been detected, bringing with them a treasure trove of information describing many rich and strange alien worlds for astronomers to pour over. In May 2014, a team of astronomers at Vanderbilt University in Nashville, Tennessee, announced their bizarre discovery that some faraway Sun-like stars, inhabiting our Milky Way Galaxy, hungrily devour tasty Earth-like planets that circle them in searing-hot, close-in orbits. These "Earth-eaters," during their development, snack on large quantities of the rocky stuff from which "terrestrial"planets--like Mercury, Venus, Earth, and Mars--are composed.
Trey Mack, a doctoral student in astronomy at Vanderbilt, created a model that estimates the effect this sort of sinister diet has on a parent star's chemical composition. Mack and colleagues have also used this model to study a distant duo of twin stars that both possess their own set of planetary offspring.
The results of this study were published online May 7, 2014 in the Astrophysical Journal.
After obtaining a high-resolution spectrum for a target star, astronomers can now actually spot the tattle-tale signature of this evil feast.
"Trey has shown that we can actually model the chemical signature of a star in detail, element by element, and determine how that signature is changed by the ingestion of Earth-like planets. After obtaining a high-resolution spectrum for a given star, we can actually detect that signature in detail," noted Dr. Keivan Stassun in a May 16, 2014 Vanderbilt University Press Release. Dr. Stassum is a professor of astronomy at Vanderbilt.
This new model will enable astronomers to better understand the process of planet formation--as well as helping them in their ongoing and dedicated hunt for Earth-like worlds dwelling beyond our Sun.
Stars are enormous, seething, and searing-hot balls composed of more than 98 percent hydrogen and helium gas. All of the other elements that may exist in the glaring furnace of a star compose less than 2 percent of their mass. In astronomical jargon, all atomic elements heavier than hydrogen and helium are termed metals, and they have coined the term metallicity to define the ratio of the relative abundance of iron to hydrogen in a star's chemical composition.
Over the past twenty years, astronomers have developed new strategies to help them detect exoplanets in great numbers--and there have been several recent studies that attempt to link stellar metallicity with planet formation. One study, conducted by scientists at Los Alamos National Laboratory in New Mexico, suggests that stars sporting high metallicity are more likely to give rise to planetary systems than stars that are less richly endowed with elements heavier than helium. A second study argues that hot Jupiter planets are seen primarily in close, fast orbits around high metallicity stellar parents, while smaller planets are most frequently observed in orbit around stars with a diverse range of metallicities.
The first alien planet to be discovered in orbit around a distant Sun-like star was a hot Jupiter dubbed 51 Pegasi b--or 51 Peg b, for short. This sizzling distant world proved to be enormous, hugging its parent-star, 51 Pegasi, fast and close. In fact, 51 Peg b orbits its stellar parent at a distance of only 4,300,000 miles--which is only a small fraction of the distance separating Mercury, the innermost planet in our Solar System, from the Sun.
wn.com/Documentary Films The Search For Earth Like Planets
Documentary Films: The Search for Earth Like Planets
The first exoplanet to be observed circling a Sun-like star was an enormous roaster, spotted by two Swiss astronomers who made the historic discovery back in 1995. Since then, around 1800 exoplanets orbiting stars beyond our Sun have been detected, bringing with them a treasure trove of information describing many rich and strange alien worlds for astronomers to pour over. In May 2014, a team of astronomers at Vanderbilt University in Nashville, Tennessee, announced their bizarre discovery that some faraway Sun-like stars, inhabiting our Milky Way Galaxy, hungrily devour tasty Earth-like planets that circle them in searing-hot, close-in orbits. These "Earth-eaters," during their development, snack on large quantities of the rocky stuff from which "terrestrial"planets--like Mercury, Venus, Earth, and Mars--are composed.
Trey Mack, a doctoral student in astronomy at Vanderbilt, created a model that estimates the effect this sort of sinister diet has on a parent star's chemical composition. Mack and colleagues have also used this model to study a distant duo of twin stars that both possess their own set of planetary offspring.
The results of this study were published online May 7, 2014 in the Astrophysical Journal.
After obtaining a high-resolution spectrum for a target star, astronomers can now actually spot the tattle-tale signature of this evil feast.
"Trey has shown that we can actually model the chemical signature of a star in detail, element by element, and determine how that signature is changed by the ingestion of Earth-like planets. After obtaining a high-resolution spectrum for a given star, we can actually detect that signature in detail," noted Dr. Keivan Stassun in a May 16, 2014 Vanderbilt University Press Release. Dr. Stassum is a professor of astronomy at Vanderbilt.
This new model will enable astronomers to better understand the process of planet formation--as well as helping them in their ongoing and dedicated hunt for Earth-like worlds dwelling beyond our Sun.
Stars are enormous, seething, and searing-hot balls composed of more than 98 percent hydrogen and helium gas. All of the other elements that may exist in the glaring furnace of a star compose less than 2 percent of their mass. In astronomical jargon, all atomic elements heavier than hydrogen and helium are termed metals, and they have coined the term metallicity to define the ratio of the relative abundance of iron to hydrogen in a star's chemical composition.
Over the past twenty years, astronomers have developed new strategies to help them detect exoplanets in great numbers--and there have been several recent studies that attempt to link stellar metallicity with planet formation. One study, conducted by scientists at Los Alamos National Laboratory in New Mexico, suggests that stars sporting high metallicity are more likely to give rise to planetary systems than stars that are less richly endowed with elements heavier than helium. A second study argues that hot Jupiter planets are seen primarily in close, fast orbits around high metallicity stellar parents, while smaller planets are most frequently observed in orbit around stars with a diverse range of metallicities.
The first alien planet to be discovered in orbit around a distant Sun-like star was a hot Jupiter dubbed 51 Pegasi b--or 51 Peg b, for short. This sizzling distant world proved to be enormous, hugging its parent-star, 51 Pegasi, fast and close. In fact, 51 Peg b orbits its stellar parent at a distance of only 4,300,000 miles--which is only a small fraction of the distance separating Mercury, the innermost planet in our Solar System, from the Sun.
- published: 01 Aug 2014
- views: 1243
back
- Playlist
- Chat
back
- Playlist
- Chat
14:46
Metallicity
published: 03 Feb 2015
Metallicity
Metallicity
- Report rights infringement
- published: 03 Feb 2015
- views: 56
2:19
Metallicity - Video Learning - WizScience.com
In astronomy and physical cosmology, the "metallicity" or ""Z"", is the fraction of mass o...
published: 29 Sep 2015
Metallicity - Video Learning - WizScience.com
Metallicity - Video Learning - WizScience.com
- Report rights infringement
- published: 29 Sep 2015
- views: 79
3:13
Star metallicity & Gamma Ray Bursts - Danger Zone
Still on the topic of WR 104, astronomers look at the correlational between the amount of ...
published: 01 May 2016
Star metallicity & Gamma Ray Bursts - Danger Zone
Star metallicity & Gamma Ray Bursts - Danger Zone
- Report rights infringement
- published: 01 May 2016
- views: 3292
3:07
Mass-metallicity relation for galaxies calibrated: Brown et al. (2016) OSU Astronomy Coffee Brief
This is an OSU Astronomy "Coffee Brief" for the Brown et al. (2016) paper "A Recalibration...
published: 02 Feb 2016
Mass-metallicity relation for galaxies calibrated: Brown et al. (2016) OSU Astronomy Coffee Brief
Mass-metallicity relation for galaxies calibrated: Brown et al. (2016) OSU Astronomy Coffee Brief
- Report rights infringement
- published: 02 Feb 2016
- views: 201
3:09
What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanation
What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explana...
published: 22 Aug 2016
What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanation
What is METALLICITY? What does METALLICITY mean? METALLICITY meaning, definition & explanation
- Report rights infringement
- published: 22 Aug 2016
- views: 21
8:54
The Problem with Metallicity, Stellar Metamorphosis
published: 31 May 2015
The Problem with Metallicity, Stellar Metamorphosis
The Problem with Metallicity, Stellar Metamorphosis
- Report rights infringement
- published: 31 May 2015
- views: 59
20:50
Duncan Forbes "Metallicity maps of galaxies in observations and simulations"
Duncan Forbes, Swinburne, "Metallicity maps of galaxies in observations and simulations"
...
published: 15 Aug 2013
Duncan Forbes "Metallicity maps of galaxies in observations and simulations"
Duncan Forbes "Metallicity maps of galaxies in observations and simulations"
- Report rights infringement
- published: 15 Aug 2013
- views: 64
3:16
test8 "Metallicity"
t8-13#4
published: 14 Sep 2013
test8 "Metallicity"
test8 "Metallicity"
- Report rights infringement
- published: 14 Sep 2013
- views: 88
8:32
Bryce Experiments - Metallicity and Specular Halo - by David Brinnen.
A Bryce 7.1 Pro tutorial aimed at people who are very well versed in Bryce and wish to exp...
published: 08 May 2013
Bryce Experiments - Metallicity and Specular Halo - by David Brinnen.
Bryce Experiments - Metallicity and Specular Halo - by David Brinnen.
- Report rights infringement
- published: 08 May 2013
- views: 188
2:24
Stars, Gas, Temperature and Metallicity in the Illustris Simulation
According to the Illustris simulation, this is a four-panel display of the same ~33 millio...
published: 25 Mar 2016
Stars, Gas, Temperature and Metallicity in the Illustris Simulation
Stars, Gas, Temperature and Metallicity in the Illustris Simulation
- Report rights infringement
- published: 25 Mar 2016
- views: 235
back
- Playlist
- Chat
2:19
Metallicity Video Learning WizScience com
The Universe Exploration : Strange Astronomy Facts of Inner Planets Full Documentary Films...
published: 23 Oct 2016
Metallicity Video Learning WizScience com
Metallicity Video Learning WizScience com
- Report rights infringement
- published: 23 Oct 2016
- views: 0
0:21
Metallicity in a Cosmological Simulation
Here the metallicity of gas in a hydrodynamical cosmology simulation is shown. There are 1...
published: 18 Sep 2016
Metallicity in a Cosmological Simulation
Metallicity in a Cosmological Simulation
- Report rights infringement
- published: 18 Sep 2016
- views: 5
3:03
Metallicity
In astronomy and physical cosmology, the metallicity or Z is the fraction of mass of a sta...
published: 31 Aug 2016
Metallicity
Metallicity
- Report rights infringement
- published: 31 Aug 2016
- views: 0
10:37
Tiffany Hsyu : Searching for the lowest metallicity galaxies
published: 09 Aug 2016
Tiffany Hsyu : Searching for the lowest metallicity galaxies
Tiffany Hsyu : Searching for the lowest metallicity galaxies
- Report rights infringement
- published: 09 Aug 2016
- views: 6
18:50
Zheng Zheng : Environmental dependence of galaxy metallicity and age gradients
published: 09 Aug 2016
Zheng Zheng : Environmental dependence of galaxy metallicity and age gradients
Zheng Zheng : Environmental dependence of galaxy metallicity and age gradients
- Report rights infringement
- published: 09 Aug 2016
- views: 10
13:45
Xiangcheng Ma : The origin of metallicity gradient in galaxies
published: 09 Aug 2016
Xiangcheng Ma : The origin of metallicity gradient in galaxies
Xiangcheng Ma : The origin of metallicity gradient in galaxies
- Report rights infringement
- published: 09 Aug 2016
- views: 14
3:13
Star metallicity & Gamma Ray Bursts Danger Zone
published: 30 Jun 2016
Star metallicity & Gamma Ray Bursts Danger Zone
Star metallicity & Gamma Ray Bursts Danger Zone
- Report rights infringement
- published: 30 Jun 2016
- views: 0
8:21
Evolution of Different Metallicity Stars off the Main Sequence
A video I made for a stellar structure assignment showing how stars of varying metalliciti...
published: 21 Apr 2016
Evolution of Different Metallicity Stars off the Main Sequence
Evolution of Different Metallicity Stars off the Main Sequence
- Report rights infringement
- published: 21 Apr 2016
- views: 11
back
- Playlist
- Chat
60:29
CITA 380: Low metallicity star formation: a nursery for compact binary mergers?
Title: Low metallicity star formation: a nursery for compact binary mergers?
Speaker: Rich...
published: 05 Feb 2014
CITA 380: Low metallicity star formation: a nursery for compact binary mergers?
CITA 380: Low metallicity star formation: a nursery for compact binary mergers?
- Report rights infringement
- published: 05 Feb 2014
- views: 25
23:20
Investigating the Pressure Support and Metallicity Bimodality of the CGM - Cameron Hummels
published: 21 Aug 2014
Investigating the Pressure Support and Metallicity Bimodality of the CGM - Cameron Hummels
Investigating the Pressure Support and Metallicity Bimodality of the CGM - Cameron Hummels
- Report rights infringement
- published: 21 Aug 2014
- views: 19
92:39
Keck Science Meeting 2012 Session 6
Talks in Session 6:
00:00:33 Marc Rafelski (Caltech/IPAC): "Metallicity of Damped Ly-alpha...
published: 21 Sep 2012
Keck Science Meeting 2012 Session 6
Keck Science Meeting 2012 Session 6
- Report rights infringement
- published: 21 Sep 2012
- views: 198
68:21
Searching for low-mass planets around metal-poor stars - Joao Faria
Stellar metallicity and planet formation are intimately linked. Theoretical work based on ...
published: 20 Oct 2016
Searching for low-mass planets around metal-poor stars - Joao Faria
Searching for low-mass planets around metal-poor stars - Joao Faria
- Report rights infringement
- published: 20 Oct 2016
- views: 3
41:06
CS GO Competitive #1 w/Jack
Stay tuned for more CS Go and Minecraft videos
Subscribe:
https://www.youtube.com/channel...
published: 29 Feb 2016
CS GO Competitive #1 w/Jack
CS GO Competitive #1 w/Jack
- Report rights infringement
- published: 29 Feb 2016
- views: 47
60:15
The Dwarf Galaxy Zoo
Harvard-Smithsonian Center for Astrophysics
The Dwarf Galaxy Zoo
Gurtina Besla
December 5...
published: 10 Dec 2013
The Dwarf Galaxy Zoo
The Dwarf Galaxy Zoo
- Report rights infringement
- published: 10 Dec 2013
- views: 319
69:39
Characterizing the Coldest Exoplanets - Andrew Skemer (SETI Talks 2016)
The coldest known exoplanets are still much hotter than the gas giant planets in our own S...
published: 29 Aug 2016
Characterizing the Coldest Exoplanets - Andrew Skemer (SETI Talks 2016)
Characterizing the Coldest Exoplanets - Andrew Skemer (SETI Talks 2016)
- Report rights infringement
- published: 29 Aug 2016
- views: 5464
29:29
Minecraft: Walls with Legends and Ahbstract: Bear Grylls survival strats
I hope you enjoyed the video!
Hypixel ip:
mc.hypixel.net
Legends Channel:
https://www.yo...
published: 09 Jan 2016
Minecraft: Walls with Legends and Ahbstract: Bear Grylls survival strats
Minecraft: Walls with Legends and Ahbstract: Bear Grylls survival strats
- Report rights infringement
- published: 09 Jan 2016
- views: 42
27:26
Documentary Films: The Search for Earth Like Planets
Documentary Films: The Search for Earth Like Planets
The first exoplanet to be observed c...
published: 01 Aug 2014
Documentary Films: The Search for Earth Like Planets
Documentary Films: The Search for Earth Like Planets
- Report rights infringement
- published: 01 Aug 2014
- views: 1243
CITA 380: Low metallicity star formation: a nurser...
Investigating the Pressure Support and Metallicity...
Keck Science Meeting 2012 Session 6...
Searching for low-mass planets around metal-poor s...
CS GO Competitive #1 w/Jack...
The Dwarf Galaxy Zoo...
Characterizing the Coldest Exoplanets - Andrew Ske...
Minecraft: Walls with Legends and Ahbstract: Bear ...
Documentary Films: The Search for Earth Like Plane...
-
Lyrics list:lyrics
-
Modela Est, Sopor Aeternus
-
Middle East, The Watchmen
-
Middle East, Israel Vibration
-
Middle East, Naked Aggression
-
Middle East, Watchmen
-
Middle East, Ofra Haza
-
Metalized, Fester
Modela Est
[text & music: Kraftwerk - Das Model]
Modela est specie pulchra est.
Libenter hadie domum meam mecum eam auferam.
Frigidam videtur auram tenere,
neminem sibi patiens accedere,
sed ante camera demonstrat artem suam.
Vinum scatens bibit, recte, nocte in caupana,
et in qua judicium de omnibus viris fecit.
In juce arte facta lenis risus juvenilis fulget.
Est pulchra specie, et pulchritudo, pecuniam fert.
Se spectanda propnit pro producto qui mercandum est.
Spectatur a milibus oculorum.
Nova imago eius me effascinat.
Revisenda mihi est, patior, consecuta est.
back
Duterte deal with China over Scarborough Shoal exposes US failure
Edit CNN 31 Oct 2016
(CNN)Controversial Philippines president Rodrigo Duterte appears to have secured a major concession from Beijing in the South China Sea. It happened quietly last week when China suddenly lifted its four-year blockade of the Scarborough Shoal, allowing Filipino fishermen to freely access the shoal's plentiful waters ... By cozying up to China and trash-talking America, Duterte has achieved something that Washington couldn't deliver ... Photos....
back
Ukraine stunned as vast cash reserves of political elite are made public
Edit The Guardian 31 Oct 2016
New wealth declaration system shows officials owning Fabergé eggs, weapons collections and huge stashes of currency. Two years after angry Ukrainians deposed Viktor Yanukovych and broke into his vast, opulent residential compound outside Kiev, revelations thrown up by a new system that requires government officials to declare their wealth and property online have led many to suspect the new elite are no better ... Ukraine peace process ... ....
back
Justice Letter To US Lawmakers Promises 'Appropriate Steps As Expeditiously As Possible'
Edit WorldNews.com 31 Oct 2016
Assistant U.S. Attorney General for Legislative Affairs Peter J. Kadzik sent a brief letter to six lawmakers Monday saying the department will work closely with the FBI to take “appropriate steps as expeditiously as possible” into the re-opened investigation into emails potentially tied to Hillary Clinton’s private email server, The Washington Post reported late Monday afternoon ... Lynch and FBI Director James B ... Thomas R....
back
US Elections: Trump Just 1 Point Behind Clinton In Latest Poll
Edit NDTV 31 Oct 2016
The race for the White House narrowed noticeably on Sunday as Hillary Clinton sought to shake off a renewed FBI probe of her emails and Donald Trump blitzed western states nine days ahead of the vote. ....
back
[VIDEO]: Trump: 'Never Thought We'd Say Thanks To Weiner'
Edit WorldNews.com 31 Oct 2016
At a campaign stop in Las Vegas Sunday, US presidential nominee Republican Donald Trump gave his standard campaign speech to 7,000 supporters, but also jabbed his Democratic challenger Hillary Clinton about her email issues and told voters to respond to Clinton’s email scandal at the polls, Breitbart reported Monday ... Trump told the crowd, “Obamacare is a catastrophe for your state ... The FBI re-opening the case gives me a little hope ... ....
Silvercorp to announce Second Quarter results on November 3, 2016 (Silvercorp Metals Inc)
Edit Public Technologies 31 Oct 2016
(Source. Silvercorp Metals Inc). VANCOUVER, British Columbia - October 31, 2016 - Silvercorp Metals Inc. ('Silvercorp' or the 'Company') (TSX ... About Silvercorp Metals Inc ... For more information, please visit our website at www.silvercorpmetals.com ... Silvercorp Metals Inc ... Phone ... Silvercorp Metals Inc....
Sierra Metals announces Q3-2016 financial results at its Sociedad Minera Corona subsidiary in Peru
Edit PR Newswire 31 Oct 2016Hedge Fund Citrine Is Skeptical About the Year’s Best Metal
Edit Bloomberg 31 Oct 2016
One of the last surviving metals hedge funds is treating this year’s zinc frenzy with a pinch of salt ... The metal has rallied on speculation a deficit will appear after miners led by Glencore Plc cut output last year and some old mines closed. ... Citrine is convinced aluminum is the only metal on the London Metal Exchange that’s been in deficit this year, Crone said. Demand prospects, too, have been better than any other metal....
RPT-COLUMN-Volumes down, discontent up on the London Metal Exchange: Andy Home
Edit Reuters 31 Oct 2016Businesses bearing brunt as metal theft groups fly in from across the EU
Edit Irish Independent 31 Oct 2016Giant metallic asteroid psyche may have water
Edit Fox News 31 Oct 2016
The largest metallic asteroid in the solar system may have water on its surface, astronomers have found ... ....
LMEWEEK-HKEX to copy London Metal Exchange "ring" at new Chinese commodity exchange
Edit Reuters 31 Oct 20164-Tier 54" Steel Wire Metal Shelving Rack for $27 + free shipping w/code SDRACK3
Edit CNET 31 Oct 2016
Factory Direct Wholesale via Rakuten offers the BestOffice 54" Steel Wire 4-Tier Metal Shelving Rack in Black, model no. WS-T54, for $29.99. Coupon code "SDRACK3" drops it to $26.99. With free shipping, that's tied with our mention from three weeks ago as the lowest total price we've seen. (It's the best deal now by $8.) It measures 36" x 14" x 54" and features four adjustable shelves and up to a 250-lb. capacity per shelf ... ....
ASA Gold and Precious Metals Limited Declares Distribution
Edit Business Wire 31 Oct 2016
SAN MATEO, Calif.--(BUSINESS WIRE)--ASA Gold and Precious Metals Limited (the “Company”) (NYSE.ASA) declared a distribution of $0.02 per common share of the Company. The distribution is payable on November 28, 2016 to shareholders of record as of the close of business on November 15, 2016. Due to declining dividends received by the portfolio, this distribution will be paid from undistributed net investment income ... ....
Form 484 (Sims Metal Management Limited)
Edit Public Technologies 31 Oct 2016
(Source. Sims Metal Management Limited). Electronic Lodgement. Document No. 7E8479527. Lodgement date/time. 31-10-2016 11.35.22. Reference Id. 96802519 Australian Securities & Investments Commission. Change to company details ... SIMS METAL MANAGEMENT LIMITED ... Name ... SIMS METAL MANAGEMENT LIMITEDACN114 838 630 ... Sims Metal Management Limited published this content on 31 October 2016 and is solely responsible for the information contained herein....
Nickel, conflict minerals and FTC Guides top Precious Metals Commission agenda (CIBJO - Confédération International de la Bijouterie, Joaillerie, Orfévrerie des Diamantes, Perles et Pierres)
Edit Public Technologies 31 Oct 2016
The Precious Metals Commission featured a discussion on changes to regulations regarding use of nickel, particularly the EN1811.2011 standard which had caused concerns to the trade ... The FTC is revising its guides, and precious metals is of great concern to them, particularly relating to thickness of metal applications/coatings and karat quality mineral thresholds in alloys....
Appendix 3B (Sims Metal Management Limited)
Edit Public Technologies 31 Oct 2016
(Source. Sims Metal Management Limited) Appendix 3B ... and agreement ... Introduced 01/07/96 Origin ... Name of entity SIMS METAL MANAGEMENT LIMITED. ABN. 69 114 838 630 ... Issue of fully paid ordinary shares pursuant to the vesting of Restricted Stock Units under the Sims Metal Management Long Term Incentive Plan ... Sims Metal Management Limited published this content on 31 October 2016 and is solely responsible for the information contained herein....
- 1
- 2
- 3
- 4
- 5
- Next page »
