Testing the Fidelity of Simulations of Black Hole-Galaxy Coevolution at z ∼ 1.5 with Observations

We examine the scaling relations between the mass of a supermassive black hole (SMBH) and its host galaxy properties at 1.2 < z

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Published in:The Astrophysical journal 2020-06, Vol.896 (2), p.159
Main Authors: Ding, Xuheng, Treu, Tommaso, Silverman, John D., Bhowmick, Aklant K., Menci, N., Di Matteo, Tiziana
Format: Article
Language:English
Subjects:
Active galactic nuclei
Active galaxies
Astrophysics
Computer simulation
Correlation
Feedback
Galaxies
Galaxy evolution
Simulation
Stars & galaxies
Stellar mass
Supermassive black holes
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cited_by cdi_FETCH-LOGICAL-c380t-96de85bee4ae211fadcbf4cd5ed21803be47d82129d5513cfd9df8548a053503
cites cdi_FETCH-LOGICAL-c380t-96de85bee4ae211fadcbf4cd5ed21803be47d82129d5513cfd9df8548a053503
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container_issue 2
container_start_page 159
container_title The Astrophysical journal
container_volume 896
creator Ding, Xuheng
Treu, Tommaso
Silverman, John D.
Bhowmick, Aklant K.
Menci, N.
Di Matteo, Tiziana
description We examine the scaling relations between the mass of a supermassive black hole (SMBH) and its host galaxy properties at 1.2 < z
doi_str_mv 10.3847/1538-4357/ab91be
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Recent measurements of 32 X-ray-selected, broad-line active galactic nuclei (AGNs) are compared with two independent state-of-the-art efforts, including the hydrodynamic simulation MassiveBlackII (MBII) and a semianalytic model (SAM). After applying an observational selection function to the simulations, we find that both MBII and SAM agree well with the data, in terms of the central distribution. However, the dispersion in the mass ratio between black hole mass and stellar mass is significantly more consistent with the MBII prediction (∼0.3 dex) than with the SAM (∼0.7 dex), even when accounting for observational uncertainties. Hence, our observations can distinguish between the different recipes adopted in the models. The mass relations in the MBII are highly dependent on AGN feedback, while the relations in the SAM are more sensitive to galaxy-merger events triggering nuclear activity. Moreover, the intrinsic scatter in the mass ratio of our high-z sample is comparable with that observed in the local sample, all but ruling out the proposed scenario that the correlations are purely stochastic in nature arising from some sort of cosmic central limit theorem. 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subjects Active galactic nuclei
Active galaxies
Astrophysics
Computer simulation
Correlation
Feedback
Galaxies
Galaxy evolution
Simulation
Stars & galaxies
Stellar mass
Supermassive black holes
title Testing the Fidelity of Simulations of Black Hole-Galaxy Coevolution at z ∼ 1.5 with Observations
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