Dust formation in Milky Way-like galaxies
We introduce a dust model for cosmological simulations implemented in the moving-mesh code arepo and present a suite of cosmological hydrodynamical zoom-in simulations to study dust formation within galactic haloes. Our model accounts for the stellar production of dust, accretion of gas-phase metals...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en_US |
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Oxford University Press
2017
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| Online Access: | http://hdl.handle.net/1721.1/108526 https://orcid.org/0000-0001-9018-1180 https://orcid.org/0000-0001-8593-7692 https://orcid.org/0000-0002-5653-0786 |
| _version_ | 1826202326028779520 |
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| author | McKinnon, Ryan Torrey, Paul Vogelsberger, Mark McKinnon, Ryan Michael Torrey, Paul A. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics McKinnon, Ryan Torrey, Paul Vogelsberger, Mark McKinnon, Ryan Michael Torrey, Paul A. |
| author_sort | McKinnon, Ryan |
| collection | MIT |
| description | We introduce a dust model for cosmological simulations implemented in the moving-mesh code arepo and present a suite of cosmological hydrodynamical zoom-in simulations to study dust formation within galactic haloes. Our model accounts for the stellar production of dust, accretion of gas-phase metals on to existing grains, destruction of dust through local supernova activity, and dust driven by winds from star-forming regions. We find that accurate stellar and active galactic nuclei feedback is needed to reproduce the observed dust–metallicity relation and that dust growth largely dominates dust destruction. Our simulations predict a dust content of the interstellar medium which is consistent with observed scaling relations at z = 0, including scalings between dust-to-gas ratio and metallicity, dust mass and gas mass, dust-to-gas ratio and stellar mass, and dust-to-stellar mass ratio and gas fraction. We find that roughly two-thirds of dust at z = 0 originated from Type II supernovae, with the contribution from asymptotic giant branch stars below 20 per cent for z ≳ 5. While our suite of Milky Way-sized galaxies forms dust in good agreement with a number of key observables, it predicts a high dust-to-metal ratio in the circumgalactic medium, which motivates a more realistic treatment of thermal sputtering of grains and dust cooling channels. |
| first_indexed | 2024-09-23T12:05:44Z |
| format | Article |
| id | mit-1721.1/108526 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:05:44Z |
| publishDate | 2017 |
| publisher | Oxford University Press |
| record_format | dspace |
| spelling | mit-1721.1/1085262022-10-01T08:08:09Z Dust formation in Milky Way-like galaxies McKinnon, Ryan Torrey, Paul Vogelsberger, Mark McKinnon, Ryan Michael Torrey, Paul A. Massachusetts Institute of Technology. Department of Physics MIT Kavli Institute for Astrophysics and Space Research McKinnon, Ryan Michael Vogelsberger, Mark Torrey, Paul A. We introduce a dust model for cosmological simulations implemented in the moving-mesh code arepo and present a suite of cosmological hydrodynamical zoom-in simulations to study dust formation within galactic haloes. Our model accounts for the stellar production of dust, accretion of gas-phase metals on to existing grains, destruction of dust through local supernova activity, and dust driven by winds from star-forming regions. We find that accurate stellar and active galactic nuclei feedback is needed to reproduce the observed dust–metallicity relation and that dust growth largely dominates dust destruction. Our simulations predict a dust content of the interstellar medium which is consistent with observed scaling relations at z = 0, including scalings between dust-to-gas ratio and metallicity, dust mass and gas mass, dust-to-gas ratio and stellar mass, and dust-to-stellar mass ratio and gas fraction. We find that roughly two-thirds of dust at z = 0 originated from Type II supernovae, with the contribution from asymptotic giant branch stars below 20 per cent for z ≳ 5. While our suite of Milky Way-sized galaxies forms dust in good agreement with a number of key observables, it predicts a high dust-to-metal ratio in the circumgalactic medium, which motivates a more realistic treatment of thermal sputtering of grains and dust cooling channels. United States. Department of Energy (DE-FG02-97ER25308) 2017-05-01T13:37:00Z 2017-05-01T13:37:00Z 2016-03 2016-01 Article http://purl.org/eprint/type/JournalArticle 0035-8711 1365-2966 http://hdl.handle.net/1721.1/108526 McKinnon, Ryan; Torrey, Paul and Vogelsberger, Mark. “Dust Formation in Milky Way-Like Galaxies.” Monthly Notices of the Royal Astronomical Society 457, no. 4 (February 2, 2016): 3775–3800. https://orcid.org/0000-0001-9018-1180 https://orcid.org/0000-0001-8593-7692 https://orcid.org/0000-0002-5653-0786 en_US http://dx.doi.org/10.1093/mnras/stw253 Monthly Notices of the Royal Astronomical Society Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Oxford University Press arXiv |
| spellingShingle | McKinnon, Ryan Torrey, Paul Vogelsberger, Mark McKinnon, Ryan Michael Torrey, Paul A. Dust formation in Milky Way-like galaxies |
| title | Dust formation in Milky Way-like galaxies |
| title_full | Dust formation in Milky Way-like galaxies |
| title_fullStr | Dust formation in Milky Way-like galaxies |
| title_full_unstemmed | Dust formation in Milky Way-like galaxies |
| title_short | Dust formation in Milky Way-like galaxies |
| title_sort | dust formation in milky way like galaxies |
| url | http://hdl.handle.net/1721.1/108526 https://orcid.org/0000-0001-9018-1180 https://orcid.org/0000-0001-8593-7692 https://orcid.org/0000-0002-5653-0786 |
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