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No significant evolution of relations between black hole mass and galaxy total stellar mass up to z ∼ 2.5

No significant evolution of relations between black hole mass and galaxy total stellar mass up to z ∼ 2.5
No significant evolution of relations between black hole mass and galaxy total stellar mass up to z ∼ 2.5
We investigate the cosmic evolution of the ratio between black hole (BH) mass (M BH) and host galaxy total stellar mass (M stellar) out to z ~ 2.5 for a sample of 100 X-ray-selected moderate-luminosity, broad-line active galactic nuclei (AGNs) in the Chandra-COSMOS Legacy Survey. By taking advantage of the deep multiwavelength photometry and spectroscopy in the COSMOS field, we measure in a uniform way the galaxy total stellar mass using an spectral energy distribution decomposition technique and the BH mass based on broad emission line measurements and single-epoch virial estimates. Our sample of AGN host galaxies has total stellar masses of 1010−12 M ⊙, and BH masses of 107.0–9.5 M ⊙. Combining our sample with the relatively bright AGN samples from the literature, we find no significant evolution of the M BH–M stellar relation with the BH-to-host total stellar mass ratio of M BH/M stellar ~ 0.3% at all redshifts probed. We conclude that the average BH-to-host stellar mass ratio appears to be consistent with the local value within the uncertainties, suggesting a lack of evolution of the M BH–M stellar relation up to z ~ 2.5.
0004-637X
Suh, Hyewon
265bc6ab-02bb-41a8-9c40-b2c72d6e73d0
Civano, Francesca
c5bd5318-f93c-4458-af95-adb4d60d04c5
Trakhtenbrot, Benny
5a584e83-463f-4856-b244-8849730f6625
Shankar, Francesco
b10c91e4-85cd-4394-a18a-d4f049fd9cdb
Hasinger, Günther
33bb5c97-3425-41c0-b717-5435540e65a5
Sanders, David B.
2b4f462c-1c31-4926-b5b8-f13f0c706e5b
Allevato, Viola
cced4e40-6a45-4261-911a-442d99a6aeb7
Suh, Hyewon
265bc6ab-02bb-41a8-9c40-b2c72d6e73d0
Civano, Francesca
c5bd5318-f93c-4458-af95-adb4d60d04c5
Trakhtenbrot, Benny
5a584e83-463f-4856-b244-8849730f6625
Shankar, Francesco
b10c91e4-85cd-4394-a18a-d4f049fd9cdb
Hasinger, Günther
33bb5c97-3425-41c0-b717-5435540e65a5
Sanders, David B.
2b4f462c-1c31-4926-b5b8-f13f0c706e5b
Allevato, Viola
cced4e40-6a45-4261-911a-442d99a6aeb7

Suh, Hyewon, Civano, Francesca, Trakhtenbrot, Benny, Shankar, Francesco, Hasinger, Günther, Sanders, David B. and Allevato, Viola (2020) No significant evolution of relations between black hole mass and galaxy total stellar mass up to z ∼ 2.5. The Astrophysical Journal, 889 (1), [32]. (doi:10.3847/1538-4357/ab5f5f).

Record type: Article

Abstract

We investigate the cosmic evolution of the ratio between black hole (BH) mass (M BH) and host galaxy total stellar mass (M stellar) out to z ~ 2.5 for a sample of 100 X-ray-selected moderate-luminosity, broad-line active galactic nuclei (AGNs) in the Chandra-COSMOS Legacy Survey. By taking advantage of the deep multiwavelength photometry and spectroscopy in the COSMOS field, we measure in a uniform way the galaxy total stellar mass using an spectral energy distribution decomposition technique and the BH mass based on broad emission line measurements and single-epoch virial estimates. Our sample of AGN host galaxies has total stellar masses of 1010−12 M ⊙, and BH masses of 107.0–9.5 M ⊙. Combining our sample with the relatively bright AGN samples from the literature, we find no significant evolution of the M BH–M stellar relation with the BH-to-host total stellar mass ratio of M BH/M stellar ~ 0.3% at all redshifts probed. We conclude that the average BH-to-host stellar mass ratio appears to be consistent with the local value within the uncertainties, suggesting a lack of evolution of the M BH–M stellar relation up to z ~ 2.5.

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1912.02824 - Accepted Manuscript
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Accepted/In Press date: 4 December 2019
e-pub ahead of print date: 22 January 2020

Identifiers

Local EPrints ID: 438348
URI: http://eprints.soton.ac.uk/id/eprint/438348
ISSN: 0004-637X
PURE UUID: 3fa9b360-e00c-403d-9cec-5d4b239d0527

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Date deposited: 06 Mar 2020 17:31
Last modified: 25 Nov 2021 19:31

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Contributors

Author: Hyewon Suh
Author: Francesca Civano
Author: Benny Trakhtenbrot
Author: Günther Hasinger
Author: David B. Sanders
Author: Viola Allevato

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