BOSS: quasar luminosity function J/ApJ/773/14 ivo://CDS.VizieR/J/ApJ/773/14 doi:10.26093/cds/vizier.17730014 CDS Ross N.P. McGreer I.D. White M. Richards G.T. Myers A.D.,Palanque-Delabrouille N. Strauss M.A. Anderson S.F. Shen Y.,Brandt W.N. Yeche C. Swanson M.E.C. Aubourg E. Bailey S. Bizyaev D.,Bovy J. Brewington H. Brinkmann J. DeGraf C. Di Matteo T. Ebelke G.,Fan X. Ge J. Malanushenko E. Malanushenko V. Mandelbaum R.,Maraston C. Muna D. Oravetz D. Pan K. Paris I. Petitjean P.,Schawinski K. Schlegel D.J. Schneider D.P. Silverman J.D. Simmons A.,Snedden S. Streblyanska A. Suzuki N. Weinberg D.H. York D. 2015-04-14T09:52:24Z 2015-03-16T11:24:05Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr visible-astronomy sloan-photometry redshifted quasars surveys We present a new measurement of the optical quasar luminosity function (QLF), using data from the Sloan Digital Sky Survey-III: Baryon Oscillation Spectroscopic Survey (SDSS-III: BOSS). From the SDSS-III Data Release Nine, a uniform sample of 22301 i<~21.8 quasars are selected over an area of 2236deg^2^, with confirmed spectroscopic redshifts between 2.2<z<3.5, filling in a key part of the luminosity-redshift plane for optical quasar studies. The completeness of the survey is derived through simulated quasar photometry, and this completeness estimate is checked using a sample of quasars selected by their photometric variability within the BOSS footprint. We investigate the level of systematics associated with our quasar sample using the simulations, in the process generating color-redshift relations and a new quasar K-correction. We probe the faint end of the QLF to M_i_(z=2.2){approx}-24.5 and see a clear break in the QLF at all redshifts up to z=3.5. A log-linear relation (in log{Phi}*-M*) for a luminosity evolution and density evolution model is found to adequately describe our data within the range 2.2<z<3.5; across this interval the break luminosity increases by a factor of ~2.6 while {Phi}* declines by a factor of ~8. At z<~2.2 our data are reasonably well fit by a pure luminosity evolution model, and only a weak signature of "AGN downsizing" is seen, in line with recent studies of the hard X-ray luminosity function. We compare our measured QLF to a number of theoretical models and find that models making a variety of assumptions about quasar triggering and halo occupation can fit our data over a wide range of redshifts and luminosities. 2013ApJ...773...14R https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/773/14 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to VII/270 : SDSS quasar catalog: tenth data release (Paris+, 2014) VII/269 : SDSS Quasar Catalog, DR9Q (Paris+, 2012) V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012) V/141 : Light-Motion Curve Catalogue (LMCC) in Stripe 82 (Bramich+ 2008) VII/241 : The 2dF QSO Redshift Survey (Croom+ 2004) J/ApJS/215/12 : BOSS narrow CIV absorption lines. II. zem>2.4 (Chen+, 2014) J/ApJ/768/105 : z~5 QLF from SDSS Stripe 82 (McGreer+, 2013) J/ApJ/764/45 : Luminosity function of broad-line QSOs. II. (Kelly+, 2013) J/ApJS/199/3 : The quasars MMT-BOSS pilot survey (Ross+, 2012) J/ApJ/746/169 : Luminosity function of broad-line quasars (Shen+, 2012) J/ApJ/743/125 : Likelihood method for QSOs selection (Kirkpatrick+, 2011) J/ApJ/740/37 : Obscured AGN at z~0.5-1 in the CDFS (Luo+, 2011) J/AJ/141/182 : Radio and optical properties of QSOs (Kimball+, 2011) J/A+A/530/A42 : X-ray properties of AGNs in XBS (Corral+, 2011) J/ApJ/728/26 : QSO selection based on phot. variability (Macleod+, 2011) J/ApJ/728/23 : GALEX UV-bright high-redshift quasars (Worseck+, 2011) J/ApJS/186/378 : Hard X-ray survey from Swift-BAT 2004-2006 (Tueller+, 2010) J/ApJ/710/1498 : QSO luminosity function at z~4 (Glikman+, 2010) J/ApJ/702/767 : CIV and FeK{alpha} Baldwin effects in AGNs (Wu+, 2009) J/MNRAS/392/19 : The 2dF-SDSS QSO survey (Croom+, 2009) J/ApJS/180/67 : Photometric selection of SDSS QSOs. II. (Richards+, 2009) J/ApJ/690/20 : Models of the AGN & black hole populations (Shankar+, 2009) J/AJ/136/2373 : Type 2 quasars from SDSS (Reyes+, 2008) J/ApJ/675/49 : High-redshift QSOs in the SWIRE survey (Siana+, 2008) J/ApJS/166/470 : SDSS-Spitzer type I QSOs IR photometry (Richards+, 2006) J/AJ/131/2788 : Redshifts in the SFQS survey (Jiang+, 2006) J/AJ/131/2766 : Quasar luminosity function from SDSS-DR3 (Richards+, 2006) J/AJ/121/2308 : Sloan Digital Sky Survey quasar photometry (Richards+, 2001) J/MNRAS/275/1102 : Evolution of quasar luminosity function (Hawkins+ 1995) J/MNRAS/260/202 : Quasar luminosity function (Hawkins+, 1993) http://www.sdss3.org/dr9 : SDSS-III home page for DR9. https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/773/14 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/773/14 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/773/14 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/773/14 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/773/14 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/773/14 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJ/773/14/table3 (The SDSS-III BOSS DR9 Statistical Quasar Dataset) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/773/14/table3? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/773/14/table3? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/773/14/table3? 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Should Not be used for identification. meta.record int RAJ2000 Right Ascension in decimal degrees (J2000) deg pos.eq.ra;meta.main indexed DEJ2000 Declination in decimal degrees (J2000) deg pos.eq.dec;meta.main indexed umag [18.3/26.5] SDSS u band magnitude mag phot.mag;em.opt.U float e_umag [0.01/5] Uncertainty in umag mag stat.error;phot.mag;em.opt.U float gmag SDSS g band magnitude mag phot.mag;em.opt.B float e_gmag Uncertainty in gmag mag stat.error;phot.mag;em.opt.B float rmag SDSS r band magnitude mag phot.mag;em.opt.R float e_rmag Uncertainty in rmag mag stat.error;phot.mag;em.opt.R float e_imag [0.009/1.1] Uncertainty in imag mag stat.error;phot.mag;em.opt.I float zmag [17.5/23.1] SDSS z band magnitude mag phot.mag;em.opt.I float e_zmag [0.01/2.5] Uncertainty in zmag mag stat.error;phot.mag;em.opt.I float Ai [0.007/0.5] The i band extinction mag phys.absorption float z.b [0.2/5]? BOSS pipeline redshift (1) src.redshift;pos.heliocentric float nullable z.v [2.2/3.5] Visual inspection redshift (1) src.redshift;pos.heliocentric float fsc [0.1/1] Spectro-coverage completeness; see section 3.1.4 meta.note float DR9 Display the SDSS DR9 photometric (V/139) and quasar (VII/269) catalogs within 0.6" meta.ref.url char Sloan Display the online SDSS data for this quasar meta.ref.url char
J/ApJ/773/14/table5 The Quasar Selection Function for the fiducial model described in the text; see also Fig. 6 recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int istart The i band starting magnitude mag phot.mag float iend The i band ending magnitude mag phot.mag float zstart The z band starting magnitude mag phot.mag float zend The z band ending magnitude mag phot.mag float SFunc [0/1] Fraction of simulated quasars selected by "Extreme Deconvolution" (XDQSO) algorithm (1) meta.note float
J/ApJ/773/14/table9 The narrowly binned BOSS DR9 Quasar Luminosity Function recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int <z> [2.2/3.9] Mean redshift of the bin src.redshift;pos.heliocentric float <iMag> Mean absolute i band magnitude at z=2 mag phys.magAbs float ibin Absolute i band magnitude bin center mag phys.magAbs float NQ [1/576] Number of quasars in the bin meta.number int logPhi [-8.6/-5.5]? Log of the quasar luminosity function log{Phi} (1) log(Mpc**-3.mag**-1) phys.luminosity.fun float nullable e_Phi [1.6/149]? Poisson error in Phi; divided by 1e-9 (1) 1e-09Mpc**-3.mag**-1 stat.error float nullable
J/ApJ/773/14/table6 The i-band K-corrections recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int zem [2/4.6] Emission line redshift src.redshift float KCor [-0.7/-0.1] The i band K-correction (1) arith.factor;phot.mag float
J/ApJ/773/14/table10 The narrowly binned BOSS Quasar Luminosity Function using data from 5731 (5476) 2.20<z<4.00 (3.50) quasars selected via their variability signature on Stripe 82 (Sec. 2.4) recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int <z> [2.2/3.9] Mean redshift of the bin src.redshift;pos.heliocentric float <iMag> Mean absolute i band magnitude at z=2 mag phys.magAbs float ibin Absolute i band magnitude bin center mag phys.magAbs float NQ [1/576] Number of quasars in the bin meta.number int logPhi [-8.6/-5.5]? Log of the quasar luminosity function log{Phi} (1) log(Mpc**-3.mag**-1) phys.luminosity.fun float nullable e_Phi [1.6/149]? Poisson error in Phi; divided by 1e-9 (1) 1e-09Mpc**-3.mag**-1 stat.error float nullable