Dark-ages reionization and galaxy formation simulation - XIII. AGN quenching of high-redshift star formation in ZF-COSMOS-20115
| dc.contributor.author | Qin, Yuxiang | en |
| dc.contributor.author | Mutch, Simon J. | en |
| dc.contributor.author | Duffy, Alan R. | en |
| dc.contributor.author | Geil, Paul M. | en |
| dc.contributor.author | Poole, Gregory B. | en |
| dc.contributor.author | Mesinger, Andrei | en |
| dc.contributor.author | Wyithe, J. Stuart B. | en |
| dc.date.accessioned | 2025-06-30T02:35:05Z | |
| dc.date.available | 2025-06-30T02:35:05Z | |
| dc.date.issued | 2017 | en |
| dc.description.abstract | Massive quiescent galaxies (MQGs) are thought to have formed stars rapidly at early times followed by a long period of quiescence. The recent discovery of aMQG, ZF-COSMOS-20115 at z ~ 4, only 1.5 Gyr after the big bang, places new constraints on galaxy growth and the role of feedback in early star formation. Spectroscopic follow-up confirmed ZF-COSMOS- 20115 as a MQG at z = 3.717 with an estimated stellar mass of ~1011 M⊙, showing no evidence of recent star formation. We use the MERAXES semi-analytic model to investigate how ZF-COSMOS-20115 analogues build stellar mass, and why they become quiescent. We identify three analogue galaxies with similar properties to ZF-COSMOS-20115. We find that ZF-COSMOS-20115 is likely hosted by a massive halo with virial mass of ~1013M⊙, having been through significant mergers at early times. These merger events drove intense growth of the nucleus, which later prevented cooling and quenched star formation. Therefore, ZFCOSMOS- 20115 is unlikely to have experienced strong or extended star formation events at z < 3.7.We find that the analogues host the most massive black holes in our simulation and were luminous quasars at z ~ 5, indicating that ZF-COSMOS-20115 and other MQGs may be the descendants of high-redshift quasars. In addition, themodel suggests that ZF-COSMOS-20115 formed in a region of intergalactic medium that was reionized early. | en |
| dc.description.sponsorship | This research was supported by the Victorian Life Sciences Computation Initiative (VLSCI), grant ref. UOM0005, on its Peak Computing Facility hosted at the University of Melbourne, an initiative of the Victorian Government, Australia. Part of this work was performed on the gSTAR national facility at Swinburne University of Technology. gSTAR is funded by Swinburne and the Australian Governments Education Investment Fund. This work was supported by the Flagship Allocation Scheme of the NCI National Facility at the ANU, generous allocations of time through the iVEC Partner Share and Australian Supercomputer Time Allocation Committee. AM acknowledges support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant No. 638809 – AIDA). | en |
| dc.description.status | Peer-reviewed | en |
| dc.format.extent | 10 | en |
| dc.identifier.issn | 0035-8711 | en |
| dc.identifier.other | ORCID:/0000-0001-7956-9758/work/162950496 | en |
| dc.identifier.scopus | 85044329340 | en |
| dc.identifier.uri | http://www.scopus.com/inward/record.url?scp=85044329340&partnerID=8YFLogxK | en |
| dc.identifier.uri | https://hdl.handle.net/1885/733765608 | |
| dc.language.iso | en | en |
| dc.rights | Publisher Copyright: © 2018 The Author(s). | en |
| dc.source | Monthly Notices of the Royal Astronomical Society | en |
| dc.subject | Galaxies: evolution | en |
| dc.subject | Galaxies: high-redshift | en |
| dc.subject | Methods: numerical | en |
| dc.title | Dark-ages reionization and galaxy formation simulation - XIII. AGN quenching of high-redshift star formation in ZF-COSMOS-20115 | en |
| dc.type | Journal article | en |
| dspace.entity.type | Publication | en |
| local.bibliographicCitation.lastpage | 4354 | en |
| local.bibliographicCitation.startpage | 4345 | en |
| local.contributor.affiliation | Qin, Yuxiang; University of Melbourne | en |
| local.contributor.affiliation | Mutch, Simon J.; University of Melbourne | en |
| local.contributor.affiliation | Duffy, Alan R.; Swinburne University of Technology | en |
| local.contributor.affiliation | Geil, Paul M.; University of Melbourne | en |
| local.contributor.affiliation | Poole, Gregory B.; Swinburne University of Technology | en |
| local.contributor.affiliation | Mesinger, Andrei; Scuola Normale Superiore di Pisa | en |
| local.contributor.affiliation | Wyithe, J. Stuart B.; Research School of Physics, ANU College of Science and Medicine, The Australian National University | en |
| local.identifier.citationvolume | 471 | en |
| local.identifier.doi | 10.1093/mnras/stx1852 | en |
| local.identifier.pure | 8d841e20-fb56-460a-a9e1-8615827b344e | en |
| local.identifier.url | https://www.scopus.com/pages/publications/85044329340 | en |
| local.type.status | Published | en |