Formation of a Malin 1 analogue in IllustrisTNG by stimulated accretion
© 2018 The Author(s). The galaxy Malin 1 contains the largest stellar disc known but the formation mechanism of this structure has been elusive. In this paper, we report a Malin 1 analogue in the 100 Mpc IllustrisTNG simulation and describe its formation history. At redshift zero, this massive galax...
| Main Authors: | , , , , , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Oxford University Press (OUP)
2021
|
| Online Access: | https://hdl.handle.net/1721.1/134757 |
| _version_ | 1811073355944558592 |
|---|---|
| author | Zhu, Qirong Xu, Dandan Gaspari, Massimo Rodriguez-Gomez, Vicente Nelson, Dylan Vogelsberger, Mark Torrey, Paul Pillepich, Annalisa Zjupa, Jolanta Weinberger, Rainer Marinacci, Federico Pakmor, Rüdiger Genel, Shy Li, Yuexing Springel, Volker Hernquist, Lars |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Zhu, Qirong Xu, Dandan Gaspari, Massimo Rodriguez-Gomez, Vicente Nelson, Dylan Vogelsberger, Mark Torrey, Paul Pillepich, Annalisa Zjupa, Jolanta Weinberger, Rainer Marinacci, Federico Pakmor, Rüdiger Genel, Shy Li, Yuexing Springel, Volker Hernquist, Lars |
| author_sort | Zhu, Qirong |
| collection | MIT |
| description | © 2018 The Author(s). The galaxy Malin 1 contains the largest stellar disc known but the formation mechanism of this structure has been elusive. In this paper, we report a Malin 1 analogue in the 100 Mpc IllustrisTNG simulation and describe its formation history. At redshift zero, this massive galaxy, having a maximum circular velocity Vmax of 430 km s-1, contains a 100 kpc gas/stellar disc with morphology similar toMalin 1. The simulated galaxy reproduces well many observed features of Malin 1's vast disc, including its stellar ages, metallicities, and gas rotation curve. We trace the extended disc back in time and find that a large fraction of the cold gas at redshift zero originated from the cooling of hot halo gas, triggered by the merger of a pair of intruding galaxies. Our finding provides a novel way to form large galaxy discs as extreme as Malin 1 within the current galaxy formation framework. |
| first_indexed | 2024-09-23T09:31:46Z |
| format | Article |
| id | mit-1721.1/134757 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:31:46Z |
| publishDate | 2021 |
| publisher | Oxford University Press (OUP) |
| record_format | dspace |
| spelling | mit-1721.1/1347572023-02-23T15:13:41Z Formation of a Malin 1 analogue in IllustrisTNG by stimulated accretion Zhu, Qirong Xu, Dandan Gaspari, Massimo Rodriguez-Gomez, Vicente Nelson, Dylan Vogelsberger, Mark Torrey, Paul Pillepich, Annalisa Zjupa, Jolanta Weinberger, Rainer Marinacci, Federico Pakmor, Rüdiger Genel, Shy Li, Yuexing Springel, Volker Hernquist, Lars Massachusetts Institute of Technology. Department of Physics MIT Kavli Institute for Astrophysics and Space Research © 2018 The Author(s). The galaxy Malin 1 contains the largest stellar disc known but the formation mechanism of this structure has been elusive. In this paper, we report a Malin 1 analogue in the 100 Mpc IllustrisTNG simulation and describe its formation history. At redshift zero, this massive galaxy, having a maximum circular velocity Vmax of 430 km s-1, contains a 100 kpc gas/stellar disc with morphology similar toMalin 1. The simulated galaxy reproduces well many observed features of Malin 1's vast disc, including its stellar ages, metallicities, and gas rotation curve. We trace the extended disc back in time and find that a large fraction of the cold gas at redshift zero originated from the cooling of hot halo gas, triggered by the merger of a pair of intruding galaxies. Our finding provides a novel way to form large galaxy discs as extreme as Malin 1 within the current galaxy formation framework. 2021-10-27T20:08:59Z 2021-10-27T20:08:59Z 2018 2019-06-11T12:14:42Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134757 en 10.1093/MNRASL/SLY111 Monthly Notices of the Royal Astronomical Society: Letters Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Oxford University Press (OUP) arXiv |
| spellingShingle | Zhu, Qirong Xu, Dandan Gaspari, Massimo Rodriguez-Gomez, Vicente Nelson, Dylan Vogelsberger, Mark Torrey, Paul Pillepich, Annalisa Zjupa, Jolanta Weinberger, Rainer Marinacci, Federico Pakmor, Rüdiger Genel, Shy Li, Yuexing Springel, Volker Hernquist, Lars Formation of a Malin 1 analogue in IllustrisTNG by stimulated accretion |
| title | Formation of a Malin 1 analogue in IllustrisTNG by stimulated accretion |
| title_full | Formation of a Malin 1 analogue in IllustrisTNG by stimulated accretion |
| title_fullStr | Formation of a Malin 1 analogue in IllustrisTNG by stimulated accretion |
| title_full_unstemmed | Formation of a Malin 1 analogue in IllustrisTNG by stimulated accretion |
| title_short | Formation of a Malin 1 analogue in IllustrisTNG by stimulated accretion |
| title_sort | formation of a malin 1 analogue in illustristng by stimulated accretion |
| url | https://hdl.handle.net/1721.1/134757 |
| work_keys_str_mv | AT zhuqirong formationofamalin1analogueinillustristngbystimulatedaccretion AT xudandan formationofamalin1analogueinillustristngbystimulatedaccretion AT gasparimassimo formationofamalin1analogueinillustristngbystimulatedaccretion AT rodriguezgomezvicente formationofamalin1analogueinillustristngbystimulatedaccretion AT nelsondylan formationofamalin1analogueinillustristngbystimulatedaccretion AT vogelsbergermark formationofamalin1analogueinillustristngbystimulatedaccretion AT torreypaul formationofamalin1analogueinillustristngbystimulatedaccretion AT pillepichannalisa formationofamalin1analogueinillustristngbystimulatedaccretion AT zjupajolanta formationofamalin1analogueinillustristngbystimulatedaccretion AT weinbergerrainer formationofamalin1analogueinillustristngbystimulatedaccretion AT marinaccifederico formationofamalin1analogueinillustristngbystimulatedaccretion AT pakmorrudiger formationofamalin1analogueinillustristngbystimulatedaccretion AT genelshy formationofamalin1analogueinillustristngbystimulatedaccretion AT liyuexing formationofamalin1analogueinillustristngbystimulatedaccretion AT springelvolker formationofamalin1analogueinillustristngbystimulatedaccretion AT hernquistlars formationofamalin1analogueinillustristngbystimulatedaccretion |