J/ApJ/778/98ivo://CDS.VizieR/J/ApJ/778/98doi:10.26093/cds/vizier.17780098CDSShen Y.McBride C.K.White M.Zheng Z.Myers A.D.Guo H.,Kirkpatrick J.A.Padmanabhan N.Parejko J.K.Ross N.P.Schlegel D.J.,Schneider D.P.Streblyanska A.Swanson M.E.C.Zehavi I.Pan K.,Bizyaev D.Brewington H.Ebelke G.Malanushenko V.Malanushenko E.,Oravetz D.Simmons A.Snedden S.2015-06-16T16:43:10Z2015-05-22T15:06:40ZCDS support team

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

cds-question@unistra.frgalaxiesvisible-astronomyquasarssurveysWe present the measurement of the two-point cross-correlation function (CCF) of 8198 Sloan Digital Sky Survey Data Release 7 quasars and 349608 Data Release 10 CMASS galaxies from the Baryonic Oscillation Spectroscopic Survey (BOSS) at 0.3<z<0.9. The CCF can be reasonably well fit by a power-law model {xi}_QG_(r)=(r/r_0_)^-{gamma}^ on projected scales of r_p_=2-25h^-1^Mpc with r_0_=6.61+/-0.25h^-1^Mpc and {gamma}=1.69+/-0.07. We estimate a quasar linear bias of b_Q_=1.38+/-0.10 at <z>{=}0.53 from the CCF measurements, which corresponds to a characteristic host halo mass of ~4x10^12^h^-1^M_{sun}_, compared with a ~10^13^h^-1^M_{sun}_ characteristic host halo mass for CMASS galaxies. Based on the clustering measurements, most quasars at {overline}{z}~0.5 are not the descendants of their higher luminosity counterparts at higher redshift, which would have evolved into more massive and more biased systems at low redshift. We divide the quasar sample in luminosity and constrain the luminosity dependence of quasar bias to be db_Q_/dlogL=0.20+/-0.34 or 0.11+/-0.32 (depending on different luminosity divisions) for quasar luminosities -23.5>M_i_(z=2)>-25.5, implying a weak luminosity dependence of clustering for luminous quasars at {overline}{z}~0.5. We compare our measurements with theoretical predictions, halo occupation distribution (HOD) models, and mock catalogs. These comparisons suggest that quasars reside in a broad range of host halos. The host halo mass distributions significantly overlap with each other for quasars at different luminosities, implying a poor correlation between halo mass and instantaneous quasar luminosity. We also find that the quasar HOD parameterization is largely degenerate such that different HODs can reproduce the CCF equally well, but with different satellite fractions and host halo mass distributions. These results highlight the limitations and ambiguities in modeling the distribution of quasars with the standard HOD approach.2013ApJ...778...98Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/778/98CatalogResearchIsServedByTAP VizieR generic servicerelated-toV/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)VII/241 : The 2dF QSO Redshift Survey (Croom+ 2004)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/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)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/ApJ/678/635 : Spectroscopy of quasar binary candidates (Myers+, 2008)J/AJ/133/2222 : Clustering of high-redshift QSOs from SDSS (Shen+, 2007)J/ApJ/658/99 : Pairs of QSO in SDSS-DR4 (Myers+, 2007)J/ApJ/654/115 : DEEP2 Galaxy Redshift Survey: SDSS QSOs (Coil+, 2007)J/AJ/131/2766 : Quasar luminosity function from SDSS-DR3 (Richards+, 2006)J/AJ/131/1 : Binary quasars in the SDSS (Hennawi+, 2006)J/ApJS/122/51 : Spectroscopic catalog of rich galaxy clusters (Dressler+ 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/778/98https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/778/98http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/778/98https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/778/98https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/778/98http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/778/98GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/778/98/table1Summary of quasar subsamplesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[0/24] Sample number \linkRole{22 elements of the cross-correlation function}meta.idintnullableprimarySampleSample identificationmeta.id;src.samplecharNQ[188/8198] Number of quasarsmeta.numberintNG[78593/349608] Number of galaxiesmeta.numberintN*QG[41766/879352] Total number of quasar-galaxy pairs (1)meta.numberintzmin[0.3/0.6] Minimum redsfhitmeta.notefloatzmax[0.4/0.9] Maximum redshiftsrc.redshiftfloatMmin[-28.7/-23.8] Minimum massphys.massfloatMmax[-25.1/-22.5] Maximum massphys.massfloat<z>[0.4/0.7] Median redshift (2)src.redshift;pos.heliocentricfloat<Mi>[-25.7/-23.4] Median magnitude (2)phys.massfloatr0[5.3/7.2] Best-fit power-law model correlation length of the CCF (with fixed slope {gamma}=1.7)stat.fit.paramfloatE_r0[0.2/1] Positive error on r0stat.error;stat.maxfloate_r0[0.2/1.1] Negative error on r0stat.errorfloatbG[2/2.2] Galaxy linear biasstat.errorfloate_bG[0.02/0.05] bG uncertaintystat.errorfloatbQG[1.3/2] Linear bias of the cross-correlation sample (3)stat.errorfloatE_bQG[0.06/0.3] Positive error on bQGstat.error;stat.maxfloate_bQG[0.06/0.3] Negative error on bQGstat.errorfloatbQGd[1.4/2.1] Linear bias of the cross-correlation sample (4)stat.errorfloate_bQGd[0.04/0.2] bQGd uncertaintystat.errorfloatJ/ApJ/778/98/table2Measurements of the cross-correlation function (CCF) for the full sample and subsamplesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[0/24] Sample number as in Table 1 \linkRole{subsample properties }meta.idintnullablerp[0.1/49] Bin center r_p_ (in Mpc/h)Mpcspect.binSize;em.binfloatQGCross-pair numbermeta.idintwpProjected cross-correlation function (in Mpc/h)Mpcstat.correlationdoublee_wpDiagonal error in wp (in Mpc/h)Mpcstat.errordoubleJ/ApJ/778/98/table3Normalized covariance matrices from the full CCF sample and from individual CCF subsamplesM4[-1/1] Matrix element 4 (1)stat.correlationfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintM1[-1/1] Matrix element 1 (1)stat.correlationfloatM2[-1/1] Matrix element 2 (1)stat.correlationfloatM3[-1/1] Matrix element 3 (1)stat.correlationfloatM5[-1/1] Matrix element 5 (1)stat.correlationfloatM6[-1/1] Matrix element 6 (1)stat.correlationfloatM7[-1/1] Matrix element 7 (1)stat.correlationfloatM8[-1/1] Matrix element 8 (1)stat.correlationfloatM9[-1/1] Matrix element 9 (1)stat.correlationfloatM10[-1/1] Matrix element 10 (1)stat.correlationfloatM11[-1/1] Matrix element 11 (1)stat.correlationfloatM12[-1/1] Matrix element 12 (1)stat.correlationfloatM13[-1/1] Matrix element 13 (1)stat.correlationfloatM14[-1/1] Matrix element 14 (1)stat.correlationfloatM15[-1/1] Matrix element 15 (1)stat.correlationfloatM16[-1/1] Matrix element 16 (1)stat.correlationfloatM17[-1/1] Matrix element 17 (1)stat.correlationfloatM18[-1/1] Matrix element 18 (1)stat.correlationfloatM19[-1/1] Matrix element 19 (1)stat.correlationfloatM20[-1/1] Matrix element 20 (1)stat.correlationfloatM21[-1/1] Matrix element 21 (1)stat.correlationfloatM22[-1/1] Matrix element 22 (1)stat.correlationfloat