136806 - Feedback by supermassive black holes in galaxy evolution.pdf (4.62 MB)
Feedback by supermassive black holes in galaxy evolution: Impacts of accretion and outflows on the star formation rate
journal contribution
posted on 2023-05-20, 09:49 authored by Raouf, M, Silk, J, Stanislav ShabalaStanislav Shabala, Mamon, GA, Croton, DJ, Khosroshahi, HG, Beckmann, RSWe describe a physical model of the outflows produced as a result of gas accretion on to a black hole, and the resultant changes to star formation rates and efficiencies in galaxies, using the RADIO-SAGE semi-analytic galaxy formation model. We show that the ratio of outflow rate to SFR of galaxies is mainly driven by black hole mass and virial halo mass, and show that the SFR is higher than the outflow rate at low black hole masses. The model consistently reproduces the observed evolution of star formation rate density from 𝓏 = 6 to 𝓏 = 0, as well as the trend of the stellar mass - halo mass relations. We show the characteristic growth of massive galaxies influenced by AGN feedback at different redshifts. We find feedback to be prevalent in the most massive galaxy haloes, inhibiting the cooling catastrophe.
History
Publication title
Monthly Notices of the Royal Astronomical SocietyVolume
486Pagination
1509-1522ISSN
0035-8711Department/School
School of Natural SciencesPublisher
Blackwell Publishing LtdPlace of publication
9600 Garsington Rd, Oxford, England, Oxon, Ox4 2DgRights statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2019 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.Repository Status
- Open