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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
AGN and star formation at cosmic noon: Comparison of data to theoretical models
Monthly Notices of the Royal Astronomical Society, Volume 508, No. 1, Year 2021
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Description
In theoretical models of galaxy evolution, active galactic nucleus (AGN) and star formation (SF) activity are closely linked and AGN feedback is routinely invoked to regulate galaxy growth. In order to constrain such models, we compare the hydrodynamical simulations IllustrisTNG and SIMBA, and the semi-Analytical model SAG to the empirical results on AGN and SF at cosmic noon (0.75 < z < 2.25) reported in Florez et al. (2020). The empirical results are based on a large mass-complete sample drawn from 93 307 galaxies with and without high X-ray luminosity AGN (LX â 1044 erg s-1), selected from a 11.8 deg2 area (∼0.18 Gpc3 comoving volume at z = 0.75-2.25). The main results of our comparisons are: (i) SAG and IllustrisTNG both qualitatively reproduce the empirical result that galaxies with high X-ray luminosity AGN have higher mean SFR, at a given stellar mass, than galaxies without such AGN. SAG, however, strongly overproduces the number density of high X-ray luminosity AGN by a factor of 10-100, while IllustrisTNG shows a lack of high X-ray luminosity AGN at high stellar mass ($M∗ \gt 10^{11} \, \mathrm{M}-{\odot }$) at z ∼2. (ii) In SIMBA, the mean SFR of galaxies with high X-ray luminosity AGN is lower than the SFR of galaxies without such AGN. Contrary to the data, many high X-ray luminosity AGN in SIMBA have quenched SF, suggesting that AGN feedback, or other feedback modes in galaxies with such AGN, might be too efficient in SIMBA. © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
Authors & Co-Authors
Jogee, Shardha
United States, Austin
The University of Texas at Austin
Guo, Yuchen
United States, Austin
The University of Texas at Austin
Cora, Sofía Alejandra
Argentina, La Plata
Universidad Nacional de la Plata
Weinberger, Rainer
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Dav́e, Romeel
United Kingdom, Edinburgh
The University of Edinburgh
Hernquist, Lars E.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Vogelsberger, Mark
United States, Cambridge
Mit Kavli Institute for Astrophysics and Space Research
Ciardullo, Robin
United States, University Park
Pennsylvania State University
Finkelstein, Steven L.
United States, Austin
The University of Texas at Austin
Gronwall, Caryl A.
United States, University Park
Pennsylvania State University
Kawinwanichakij, Lalitwadee
Japan, Tokyo
The University of Tokyo
Leung, Gene C.K.
United States, Austin
The University of Texas at Austin
LaMassa, Stephanie Marie
United States, Baltimore
Space Telescope Science Institute
Papovich, Casey J.
United States, College Station
Texas A&m University
Statistics
Citations: 5
Authors: 14
Affiliations: 10
Identifiers
Doi:
10.1093/mnras/stab2593
ISSN:
00358711