TY - JOUR
T1 - No Significant Evolution of Relations between Black Hole Mass and Galaxy Total Stellar Mass up to z ∼ 2.5
AU - Suh, Hyewon
AU - Civano, Francesca
AU - Trakhtenbrot, Benny
AU - Shankar, Francesco
AU - Hasinger, Günther
AU - Sanders, David B.
AU - Allevato, Viola
N1 - Publisher Copyright:
© 2020. The American Astronomical Society. All rights reserved..
PY - 2020/1/20
Y1 - 2020/1/20
N2 - 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 o-, and BH masses of 107.0-9.5 M o-. 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.
AB - 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 o-, and BH masses of 107.0-9.5 M o-. 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.
UR - http://www.scopus.com/inward/record.url?scp=85079864156&partnerID=8YFLogxK
U2 - 10.3847/1538-4357/ab5f5f
DO - 10.3847/1538-4357/ab5f5f
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AN - SCOPUS:85079864156
SN - 0004-637X
VL - 889
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1
M1 - 32
ER -