J/AJ/121/2308ivo://CDS.VizieR/J/AJ/121/2308doi:10.26093/cds/vizier.51212308CDSRichards G.T.Fan X.Schneider D.P.Vanden Berk D.E.Strauss M.A.,York D.G.Anderson J.E.JrAnderson S.F.Annis J.Bahcall N.A.,Bernardi M.Briggs J.W.Brinkmann J.Brunner R.Burles S.Carey L.,Castander F.J.Connolly A.J.Crocker J.H.Csabai I.Doi M.,Finkbeiner D.Friedman S.D.Frieman J.A.Fukugita M.Gunn J.E.,Hindsley R.B.Ivezic Z.Kent S.Knapp G.R.Lamb D.Q.Leger R.F.,Long D.C.Loveday J.Lupton R.H.McKay T.A.Meiksin A.Merrelli A.,Munn J.A.Newberg H.J.Newcomb M.Nichol R.C.Owen R.Pier J.R.,Pope A.Richmond M.W.Rockosi C.M.Schlegel D.J.Siegmund W.A.Smee S.,Snir Y.Stoughton C.Stubbs C.Subbarao M.Szalay A.S.Szokoly G.P.,Tremonti C.Uomoto A.Waddell P.Yanny B.Zheng W.2023-04-06T16:50:42Z2001-09-22T16:45:26ZCDS support team

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

cds-question@unistra.frquasarssurveysphotometryWe present an empirical investigation of the colors of quasars in the Sloan Digital Sky Survey (SDSS) photometric system. The sample studied includes 2625 quasars with SDSS photometry: 1759 quasars found during SDSS spectroscopic commissioning and SDSS follow-up observations on other telescopes, 50 matches to FIRST quasars, 573 matches to quasars from the NASA Extragalactic Database, and 243 quasars from two or more of these sources. The quasars are distributed in a 2.5{deg} wide stripe centered on the celestial equator covering ~529deg^2^. Positions (accurate to 0.2") and SDSS magnitudes are given for the 898 quasars known prior to SDSS spectroscopic commissioning.2001AJ....121.2308Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/121/2308CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/115/296 : SDSS new variables (Henden+ 1998)J/AJ/119/2598 : u'g'r'i'z' photometry of LCRS galaxies (Sowards-Emmerd+, 2000)J/AJ/121/2331 : Coma cluster SDSS spectrosc. commissioning (Castander+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/121/2308https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/121/2308http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/121/2308https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/121/2308https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/121/2308http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/121/2308GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/121/2308/table2 (SDSS (Sloan Digital Sky Survey) quasar photometry)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/121/2308/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/121/2308/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/121/2308/table2?GETtext/xml+votable180.050000true0.04983330.04036110.0055555555555555565/4437-4438 4501-4502 4505-4506 4522 4693 6486 6505-6506 6549 6565 6742 6745 6805 6/0-2 17405-17407 17662-17663 17725 17727 17743 17745-17747 17756-17758 17761-17762 17765 17772 17776-17777 17807 17809 17812-17813 17815 17819-17821 17826-17828 17833-17837 17842 17858 17981-17982 17997-17999 18001-18003 18012-18013 18018-18019 18028 18030 18032-18034 18061-18063 18065-18067 18069-18070 18073-18076 18078 18081-18086 18092-18094 18096-18098 18113-18114 18176-18177 18765 18767 18769 18771 18776-18777 18779-18782 18789-18790 18793 18800 18804 18843-18845 18850 18852 18856-18858 18860 18864-18865 19456 19458 21849 21872-21873 23181 23188-23189 23191 23196-23197 23203 23206 23209-23212 23214 23216 25597 25854 25918-25919 25934-25935 25937-25939 25948 25950 25953-25957 25961 25964 25966 25968 25976 25997-25998 26001-26003 26005-26007 26009 26014 26017 26019 26028-26030 26032-26034 26048 26173-26175 26189 26193 26195 26201-26206 26211 26213 26217-26218 26222 26224-26225 26257 26259 26268-26270 26274 26276 26280-26281 26283 26289 26304-26305 26368-26370 26877-26879 26943 26958-26959 26961-26964 26966-26967 26972-26974 26985 26990 26992-26994 27021-27023 27025 27030 27033 27035-27036 27038 27042 27044 27046-27047 27052-27054 27074 27219 27225 27228-27230 27238 27241 27245 27286-27287 27290 27330 27392 27648 27650 31313 31316 31333 31373 31383 31396 31398 31410 36862-368632.040811542443644e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/121/2308?format=asciiOpticaldefaultJ/AJ/121/2308/table2SDSS (Sloan Digital Sky Survey) quasar photometrye_i*magUncertainty in imagmagstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameQuasar namemeta.id;meta.maincharSimbadask the SIMBAD data-base about this objectmeta.refcharzRedshiftsrc.redshiftfloatRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainDelPosDifference between SDSS and cataloged positionsarcsecpos.eq.dec;arith.difffloatu*magThe SDSS u^*^ band photometry (1)magphot.mag;em.opt.Ufloate_u*magUncertainty in umagmagstat.errorfloatg*magThe SDSS g^*^ band photometry (1)magphot.mag;em.opt.Bfloate_g*magUncertainty in gmagmagstat.errorfloatr*magThe SDSS r^*^ band photometry (1)magphot.mag;em.opt.Rfloate_r*magUncertainty in rmagmagstat.errorfloati*magThe SDSS i^*^ band photometry (1)magphot.mag;em.opt.Ifloatz*magThe SDSS z^*^ band photometry (1)magphot.mag;em.opt.Ifloate_z*magUncertainty in zmagmagstat.errorfloatRedVecReddening vector in E(g^*^ - r^*^) (2)magphot.color.excessfloatr_NameSource catalog of each object (3)meta.refchar