J/ApJ/658/99ivo://CDS.VizieR/J/ApJ/658/99doi:10.26093/cds/vizier.16580099CDSMyers A.D.Brunner R.J.Richards G.T.Nichol R.C.Schneider D.P.,Bahcall N.A.2009-02-27T18:32:08Z2009-02-27T19:26:38ZCDS support team

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

cds-question@unistra.frsurveysquasarsredshiftedvisible-astronomysloan-photometryWe study quasar clustering on small scales, modeling clustering amplitudes using halo-driven dark matter descriptions. From 91 pairs n scales <35h^-1^kpc, we detect only a slight excess in quasar clustering over our best-fit large-scale model. Integrated across all redshifts, the implied quasar bias is bQ=4.21+/-0.98 (bQ=3.93+/-0.71) at ~18h^-1^kpc (~28h^-1^kpc).2007ApJ...658...99Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/658/99CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/282 : The SDSS Photometric Catalog, Release 6 (Adelman-McCarthy+, 2007)J/AJ/131/1 : Binary quasars in the SDSS (Hennawi+, 2006)J/A+A/459/L1 : Supercluster sample from SDSS DR4 (Einasto+, 2006)J/A+A/471/17 : SDSS-DR4 nearby clusters global properties (Aguerri+, 2007)http://www.sdss.org/dr4/ : SDSS-DR4 Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/658/99https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/658/99http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/658/99https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/658/99https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/658/99http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/658/99GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/658/99/table1 (Quasar pairs in the DR4 KDE catalog with separations <0.1')https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/658/99/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/658/99/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/658/99/table1?GETtext/xml+votable180.050000true40.155625-7.10730560.0055555555555555566/4108 4166 4186 4246 4354 4714 4748 4997 5048 5306 5502 5556 5663 5733 5785 5788 5876 5945 6003 6118 6362 6738 7168 7208 7210 7256 7337 7363 7424 7508 7561 7563 8292 8321 8330 8352 8520 8638 8691 8700 8922 9027 9058 9061 9062 9098 9168 9183 9232 9268 9320 9327 9354 9359 9444 9458 9813 10094 10189 10396 10483 10925 10938 10974 11064 11316 11341 11417 11431 11456 11514 11814 11826 11913 11955 12387 17756 18580 19426 20007 23051 25934 26353 26489 26529 26555 26578 26586 26961 27251 27371 27398 27414 27420 27500 27700 27759 27852 27858 27865 27872 28185 28186 28628 28633 30037 31628 32395 32507 36790 49087https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/658/99?format=asciiOpticaldefaultJ/ApJ/658/99/table1Quasar pairs in the DR4 KDE catalog with separations <0.1'n_zsp2Note about Pair2 (2)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSS1First component of Quasar pair name, JHHMMSS.ss+DDMMSS.smeta.id;meta.maincharRAJ2000Pair1 Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Pair1 Degree of Declination (J2000)pos.eq.dec;meta.mainumag1Pair1 SDSS u band magnitude (1)phot.mag;em.opt.Ufloatgmag1Pair1 SDSS g band magnitude (1)phot.mag;em.opt.Bfloatzph1lPair1 photometric redshift range minimumsrc.redshift.photfloatzph1mPair1 photometric redshift range midpointsrc.redshift.photfloatzph1uPair1 photometric redshift range maximumsrc.redshift.photfloatzsp1? Pair1 spectroscopic redshiftsrc.redshiftfloatnullablef_zsp1Flag on zspec1 (2)meta.codecharzsp1b? Second Pair1 spectroscopic redshiftsrc.redshiftfloatnullabler_zsp1b[b] Reference for zspecb (3)meta.ref;pos.framecharSDSS2Second component of Quasar pair name, JHHMMSS.ss+DDMMSS.smeta.id.assoccharRA2Pair2 Hour of Right Ascension (J2000)pos.eq.raDE2Pair2 Degree of Declination (J2000)pos.eq.decumag2Pair2 SDSS u band magnitude (1)phot.mag;em.opt.Ufloatgmag2Pair2 SDSS g band magnitude (1)phot.mag;em.opt.Bfloatzph2lPair2 photometric redshift range minimumsrc.redshift.photfloatzph2mPair2 photometric redshift range midpointsrc.redshift.photfloatzph2uPair2 photometric redshift range maximumsrc.redshift.photfloatzsp2? Pair2 spectroscopic redshiftsrc.redshiftfloatnullablezsp2b? Pair2 alternative spectroscopic redshiftsrc.redshiftfloatnullabler_zsp2b[b] Reference for zspec2b (3)meta.ref;pos.framecharDeltaAngular separation of Quasar pairarcsecpos.angDistancefloatf_Delta[*] Objects in high absorption regions (Ag>21) have a higher probability of being stars.meta.codecharSDSSDisplay the SDSS data for the pair (from SDSS-DR6)meta.ref.urlchar