Correlations between Black Holes and Host Galaxies in the Illustris and IllustrisTNG Simulations
© 2020. The American Astronomical Society. All rights reserved. We study black hole-host galaxy correlations, and the relation between the overmassiveness (the distance from the average M BH-σ relation) of supermassive black holes (SMBHs) and the star formation histories of their host galaxies in th...
| Main Authors: | , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Astronomical Society
2021
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| Online Access: | https://hdl.handle.net/1721.1/135209 |
| _version_ | 1811075748029530112 |
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| author | Li, Yuan Habouzit, Melanie Genel, Shy Somerville, Rachel Terrazas, Bryan A Bell, Eric F Pillepich, Annalisa Nelson, Dylan Weinberger, Rainer Rodriguez-Gomez, Vicente Ma, Chung-Pei Pakmor, Ruediger Hernquist, Lars Vogelsberger, Mark |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Li, Yuan Habouzit, Melanie Genel, Shy Somerville, Rachel Terrazas, Bryan A Bell, Eric F Pillepich, Annalisa Nelson, Dylan Weinberger, Rainer Rodriguez-Gomez, Vicente Ma, Chung-Pei Pakmor, Ruediger Hernquist, Lars Vogelsberger, Mark |
| author_sort | Li, Yuan |
| collection | MIT |
| description | © 2020. The American Astronomical Society. All rights reserved. We study black hole-host galaxy correlations, and the relation between the overmassiveness (the distance from the average M BH-σ relation) of supermassive black holes (SMBHs) and the star formation histories of their host galaxies in the Illustris and TNG100 simulations. We find that both simulations are able to produce black hole scaling relations in general agreement with observations at z = 0, but with noticeable discrepancies. Both simulations show an offset from the observations for the M BH-σ relation, and the relation between M BH and the Sérsic index. The relation between M BH and stellar mass M ∗ is tighter than the observations, especially for TNG100. For massive galaxies in both simulations, the hosts of overmassive SMBHs (those above the mean M BH-σ relation) tend to have larger Sérsic indices and lower baryon conversion efficiency, suggesting a multidimensional link between SMBHs and the properties of their hosts. In Illustris, the hosts of overmassive SMBHs have formed earlier and have lower present-day star formation rates, in qualitative agreement with the observations for massive galaxies with σ > 100 km s-1. For low-mass galaxies, such a correlation still holds in Illustris but does not exist in the observed data. For TNG100, the correlation between SMBH overmassiveness and star formation history is much weaker. The hosts of overmassive SMBHs generally have consistently larger star formation rates throughout history. These galaxies have higher stellar mass as well, due to the strong M BH-M ∗ correlation. Our findings show that simulated SMBH scaling relations and correlations are sensitive to features in the modeling of SMBHs. |
| first_indexed | 2024-09-23T10:11:14Z |
| format | Article |
| id | mit-1721.1/135209 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:11:14Z |
| publishDate | 2021 |
| publisher | American Astronomical Society |
| record_format | dspace |
| spelling | mit-1721.1/1352092023-12-14T15:33:29Z Correlations between Black Holes and Host Galaxies in the Illustris and IllustrisTNG Simulations Li, Yuan Habouzit, Melanie Genel, Shy Somerville, Rachel Terrazas, Bryan A Bell, Eric F Pillepich, Annalisa Nelson, Dylan Weinberger, Rainer Rodriguez-Gomez, Vicente Ma, Chung-Pei Pakmor, Ruediger Hernquist, Lars Vogelsberger, Mark Massachusetts Institute of Technology. Department of Physics MIT Kavli Institute for Astrophysics and Space Research © 2020. The American Astronomical Society. All rights reserved. We study black hole-host galaxy correlations, and the relation between the overmassiveness (the distance from the average M BH-σ relation) of supermassive black holes (SMBHs) and the star formation histories of their host galaxies in the Illustris and TNG100 simulations. We find that both simulations are able to produce black hole scaling relations in general agreement with observations at z = 0, but with noticeable discrepancies. Both simulations show an offset from the observations for the M BH-σ relation, and the relation between M BH and the Sérsic index. The relation between M BH and stellar mass M ∗ is tighter than the observations, especially for TNG100. For massive galaxies in both simulations, the hosts of overmassive SMBHs (those above the mean M BH-σ relation) tend to have larger Sérsic indices and lower baryon conversion efficiency, suggesting a multidimensional link between SMBHs and the properties of their hosts. In Illustris, the hosts of overmassive SMBHs have formed earlier and have lower present-day star formation rates, in qualitative agreement with the observations for massive galaxies with σ > 100 km s-1. For low-mass galaxies, such a correlation still holds in Illustris but does not exist in the observed data. For TNG100, the correlation between SMBH overmassiveness and star formation history is much weaker. The hosts of overmassive SMBHs generally have consistently larger star formation rates throughout history. These galaxies have higher stellar mass as well, due to the strong M BH-M ∗ correlation. Our findings show that simulated SMBH scaling relations and correlations are sensitive to features in the modeling of SMBHs. 2021-10-27T20:22:29Z 2021-10-27T20:22:29Z 2020 2020-11-19T19:28:06Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/135209 en 10.3847/1538-4357/AB8F8D Astrophysical Journal 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 American Astronomical Society The American Astronomical Society |
| spellingShingle | Li, Yuan Habouzit, Melanie Genel, Shy Somerville, Rachel Terrazas, Bryan A Bell, Eric F Pillepich, Annalisa Nelson, Dylan Weinberger, Rainer Rodriguez-Gomez, Vicente Ma, Chung-Pei Pakmor, Ruediger Hernquist, Lars Vogelsberger, Mark Correlations between Black Holes and Host Galaxies in the Illustris and IllustrisTNG Simulations |
| title | Correlations between Black Holes and Host Galaxies in the Illustris and IllustrisTNG Simulations |
| title_full | Correlations between Black Holes and Host Galaxies in the Illustris and IllustrisTNG Simulations |
| title_fullStr | Correlations between Black Holes and Host Galaxies in the Illustris and IllustrisTNG Simulations |
| title_full_unstemmed | Correlations between Black Holes and Host Galaxies in the Illustris and IllustrisTNG Simulations |
| title_short | Correlations between Black Holes and Host Galaxies in the Illustris and IllustrisTNG Simulations |
| title_sort | correlations between black holes and host galaxies in the illustris and illustristng simulations |
| url | https://hdl.handle.net/1721.1/135209 |
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