Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-03-09
Astrophys.J.649:616-634,2006
Astronomy and Astrophysics
Astrophysics
ApJ accepted, includes Referee comments and statistics to better quantify the statistical significance of results. 23 pages, 1
Scientific paper
10.1086/506266
In the present-day universe, supermassive black hole masses (MBH) appear to be strongly correlated with their galaxy's bulge luminosity, among other properties. In this study, we explore the analogous relationship between MBH, derived using the virial method, and the stellar R-band bulge luminosity (Lr) or stellar bulge mass (M*) at epochs of 1 < z < 4.5 using a sample of 31 gravitationally lensed AGNs and 20 non-lensed AGNs. At redshifts z > 1.7 (10--12 Gyrs ago), we find that the observed MBH--Lr relation is nearly the same (to within ~0.3 mag) as it is today. When the observed Lr are corrected for luminosity evolution, this means that the black holes grew in mass faster than their hosts, with the MBH/M* mass ratio being a factor of > 4(+2)(-1) times larger at z > 1.7 than it is today. By the redshift range 1
Falco Emilio E.
Impey Chris David
Keeton Charles R.
Kochanek Chris S.
Leh'ar Joseph
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