Properties of galaxies reproduced by a hydrodynamic simulation
Previous simulations of the growth of cosmic structures have broadly reproduced the ‘cosmic web’ of galaxies that we see in the Universe, but failed to create a mixed population of elliptical and spiral galaxies, because of numerical inaccuracies and incomplete physical models. Moreover, they were u...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Nature Publishing Group
2014
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| Online Access: | http://hdl.handle.net/1721.1/88573 https://orcid.org/0000-0001-8593-7692 |
| _version_ | 1826191224356208640 |
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| author | Genel, S. Springel, V. Torrey, P. Sijacki, D. Xu, D. Snyder, G. Bird, S. Nelson, Dylan Hernquist, L. Vogelsberger, Mark |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Genel, S. Springel, V. Torrey, P. Sijacki, D. Xu, D. Snyder, G. Bird, S. Nelson, Dylan Hernquist, L. Vogelsberger, Mark |
| author_sort | Genel, S. |
| collection | MIT |
| description | Previous simulations of the growth of cosmic structures have broadly reproduced the ‘cosmic web’ of galaxies that we see in the Universe, but failed to create a mixed population of elliptical and spiral galaxies, because of numerical inaccuracies and incomplete physical models. Moreover, they were unable to track the small-scale evolution of gas and stars to the present epoch within a representative portion of the Universe. Here we report a simulation that starts 12 million years after the Big Bang, and traces 13 billion years of cosmic evolution with 12 billion resolution elements in a cube of 106.5 megaparsecs a side. It yields a reasonable population of ellipticals and spirals, reproduces the observed distribution of galaxies in clusters and characteristics of hydrogen on large scales, and at the same time matches the ‘metal’ and hydrogen content of galaxies on small scales. |
| first_indexed | 2024-09-23T08:52:35Z |
| format | Article |
| id | mit-1721.1/88573 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:52:35Z |
| publishDate | 2014 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/885732022-09-30T11:50:33Z Properties of galaxies reproduced by a hydrodynamic simulation Genel, S. Springel, V. Torrey, P. Sijacki, D. Xu, D. Snyder, G. Bird, S. Nelson, Dylan Hernquist, L. Vogelsberger, Mark Massachusetts Institute of Technology. Department of Physics MIT Kavli Institute for Astrophysics and Space Research Vogelsberger, Mark Previous simulations of the growth of cosmic structures have broadly reproduced the ‘cosmic web’ of galaxies that we see in the Universe, but failed to create a mixed population of elliptical and spiral galaxies, because of numerical inaccuracies and incomplete physical models. Moreover, they were unable to track the small-scale evolution of gas and stars to the present epoch within a representative portion of the Universe. Here we report a simulation that starts 12 million years after the Big Bang, and traces 13 billion years of cosmic evolution with 12 billion resolution elements in a cube of 106.5 megaparsecs a side. It yields a reasonable population of ellipticals and spirals, reproduces the observed distribution of galaxies in clusters and characteristics of hydrogen on large scales, and at the same time matches the ‘metal’ and hydrogen content of galaxies on small scales. 2014-08-07T14:18:00Z 2014-08-07T14:18:00Z 2014-05 2014-01 Article http://purl.org/eprint/type/JournalArticle 0028-0836 1476-4687 http://hdl.handle.net/1721.1/88573 Vogelsberger, M., S. Genel, V. Springel, P. Torrey, D. Sijacki, D. Xu, G. Snyder, S. Bird, D. Nelson, and L. Hernquist. “Properties of galaxies reproduced by a hydrodynamic simulation.” Nature 509, no. 7499 (May 7, 2014): 177-182. https://orcid.org/0000-0001-8593-7692 en_US http://dx.doi.org/10.1038/nature13316 Nature Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Nature Publishing Group arXiv |
| spellingShingle | Genel, S. Springel, V. Torrey, P. Sijacki, D. Xu, D. Snyder, G. Bird, S. Nelson, Dylan Hernquist, L. Vogelsberger, Mark Properties of galaxies reproduced by a hydrodynamic simulation |
| title | Properties of galaxies reproduced by a hydrodynamic simulation |
| title_full | Properties of galaxies reproduced by a hydrodynamic simulation |
| title_fullStr | Properties of galaxies reproduced by a hydrodynamic simulation |
| title_full_unstemmed | Properties of galaxies reproduced by a hydrodynamic simulation |
| title_short | Properties of galaxies reproduced by a hydrodynamic simulation |
| title_sort | properties of galaxies reproduced by a hydrodynamic simulation |
| url | http://hdl.handle.net/1721.1/88573 https://orcid.org/0000-0001-8593-7692 |
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