J/ApJ/764/45ivo://CDS.VizieR/J/ApJ/764/45doi:10.26093/cds/vizier.17640045CDSKelly B.C.Shen Y.2014-12-04T15:12:50Z2014-11-17T11:44:10ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fractive-galactic-nucleiquasarsastronomical-modelsWe employ a flexible Bayesian technique to estimate the black hole (BH) mass and Eddington ratio functions for Type 1 (i.e., broad line) quasars from a uniformly selected data set of ~58000 quasars from the Sloan Digital Sky Survey (SDSS) DR7. We find that the SDSS becomes significantly incomplete at M_BH_<~3x10^8^M_{sun}_ or L/L_Edd_<~0.07, and that the number densities of Type 1 quasars continue to increase down to these limits. Both the mass and Eddington ratio functions show evidence of downsizing, with the most massive and highest Eddington ratio BHs experiencing Type 1 quasar phases first, although the Eddington ratio number densities are flat at z<2. We estimate the maximum Eddington ratio of Type 1 quasars in the observable universe to be L/L_Edd_~3. Consistent with our results in Shen & Kelly (Paper I, Cat. J/ApJ/746/169), we do not find statistical evidence for a so-called sub-Eddington boundary in the mass-luminosity plane of broad-line quasars, and demonstrate that such an apparent boundary in the observed distribution can be caused by selection effect and errors in virial BH mass estimates. Based on the typical Eddington ratio in a given mass bin, we estimate growth times for the BHs in Type 1 quasars and find that they are comparable to or longer than the age of the universe, implying an earlier phase of accelerated (i.e., with higher Eddington ratios) and possibly obscured growth. The large masses probed by our sample imply that most of our BHs reside in what are locally early-type galaxies, and we interpret our results within the context of models of self-regulated BH growth.2013ApJ...764...45Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/764/45CatalogResearchIsServedByTAP VizieR generic servicerelated-toVII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)J/A+A/541/A118 : AGN-Host Galaxy Connection (Povic+, 2012)J/ApJ/761/143 : Black hole masses of z~1.4 AGNs from SXDS (Nobuta+, 2012)J/ApJ/753/125 : NIR spectroscopy follow-up of 60 SDSS-DR7 QSOs (Shen+, 2012)J/ApJ/746/169 : Luminosity function of broad-line quasars. I. (Shen+, 2012)J/MNRAS/416/1900 : CENSORS + other 1.4GHz sources (Rigby+, 2011)J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)J/ApJS/194/42 : SDSS-DR3 MgII-based black hole masses (Rafiee+, 2011)J/ApJ/742/68 : HST observations of low-mass BH host galaxies (Jiang+, 2011)J/ApJ/733/60 : Accretion rate of AGNs from COSMOS surveys (Trump+, 2011)J/ApJ/720/368 : Color-magnitude relations of galaxies in CDFs (Xue+, 2010)J/ApJ/708/137 : Broad-line AGNs in zCOSMOS survey (Merloni+, 2010)J/ApJ/691/705 : AGN host galaxy morphologies in COSMOS (Gabor+, 2009)J/ApJ/699/800 : Mass functions of active black holes (Vestergaard+, 2009)J/ApJ/690/20 : Models of the AGN and black hole populations (Shankar+, 2009)J/ApJ/680/169 : SDSS DR5 virial black hole masses (Shen+, 2008)J/A+A/492/637 : Eddington ratios of faint AGN (Gavignaud+, 2008)J/ApJS/176/355 : AGN X-Ray emission and black holes (Kelly+, 2008)J/ApJS/172/383 : AGN candidates in the COSMOS field (Trump+, 2007)J/ApJS/172/70 : zCOSMOS-bright catalog (Lilly+, 2007)J/ApJS/168/1 : Black hole mass estimates (Kelly+, 2007)J/ApJ/667/131 : Mass function of active black holes (Greene+, 2007)J/ApJ/654/115 : DEEP2 Galaxy Redshift Survey: SDSS QSOs (Coil+, 2007)J/AJ/133/2222 : Clustering of high-redshift QSOs from SDSS (Shen+, 2007)J/AJ/131/2766 : Quasar luminosity function from SDSS-DR3 (Richards+, 2006)J/ApJ/614/91 : Black hole mass and accretion rate of AGNs (Wu+, 2004)J/ApJ/613/682 : AGN central masses & broad-line region sizes (Peterson+, 2004)http://www.sdss.org/ : SDSS home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/764/45https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/764/45http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/764/45https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/764/45https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/764/45http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/764/45GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJ/764/45/table1Type 1 quasar black hole mass functionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintzbar[0.4/4.75] Mean redshift (1)src.redshift;pos.heliocentricfloatlogMBH[8/11] Log black hole masslog(solMass)phys.massfloatb_logPhiLower boundary on logPhi (2)log(Mpc**-3)phys.luminosity.fun;stat.minfloatlogPhi[-13/-3] Posterior log median for BH mass functionlog(Mpc**-3)phys.luminosity.funfloatB_logPhiUpper boundary on logPhi (2)log(Mpc**-3)phys.luminosity.fun;stat.maxfloatJ/ApJ/764/45/table2Type 1 quasar black hole Eddington ratio functionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintz[0.4/4.75] Mean redshiftsrc.redshift;pos.heliocentricfloatlogL[-1.5/1] Log luminosity relative to Eddingtonphys.luminosity;arith.ratiofloatb_logPhiLower boundary on logPhi (1)log(Mpc**-3)phys.luminosity.fun;stat.minfloatlogPhi[-13/-3] Posterior log median for BH Eddington ratio functionlog(Mpc**-3)phys.luminosity.funfloatB_logPhiUpper boundary on logPhi (1)log(Mpc**-3)phys.luminosity.fun;stat.maxfloat