J/ApJ/727/47ivo://CDS.VizieR/J/ApJ/727/47doi:10.26093/cds/vizier.17270047CDSBowen D.V.Chelouche D.2018-01-08T06:43:31Z2012-09-14T07:54:06ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyredshiftedquasarsline-intensitiesWe describe a search for MgII(2796, 2803) absorption lines in Sloan Digital Sky Survey (SDSS) spectra of QSOs whose lines of sight pass within impact parameters {rho}~200kpc of galaxies with photometric redshifts of z=0.46-0.6 and errors {Delta}z~0.05. The galaxies selected have the same colors and luminosities as the Luminous Red Galaxy (LRG) population previously selected from the SDSS. A search for MgII lines within a redshift interval of +/-0.1 of a galaxy's photometric redshift shows that absorption by these galaxies is rare: the covering fraction is f({rho})~10%-15% between {rho}=20kpc and {rho}=100kpc, for MgII lines with rest equivalent widths of W_r_>=0.6{AA}, falling to zero at larger {rho}. There is no evidence that W_r_ correlates with impact parameter or galaxy luminosity.2011ApJ...727...47Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/727/47CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)J/ApJS/194/42 : SDSS-DR3 MgII-based black hole masses (Rafiee+, 2011)J/ApJ/724/L176 : MgII absorbing gas around galaxies (Chen+, 2010)J/ApJ/698/819 : MgII and LRGs cross-correlation analysis (Lundgren+, 2009)J/ApJ/679/239 : Associated MgII absorbers (Vanden+, 2008)J/ApJ/660/1093 : Weak MgII absorbers at 0.4<z<2.4 (Narayanan+, 2007)J/ApJ/639/766 : SDSS-DR3 strong MgII absorbers (Prochter+, 2006)J/MNRAS/371/495 : Catalogue of MgII absorbers from SDSS DR3 (Bouche+, 2006)J/MNRAS/354/L25 : MgII absorbers in SDSS QSOs (Bouche+, 2004)J/A+A/410/33 : MgII/FeII absorbers in 2dF-quasar survey (Menard+, 2003)J/AJ/106/848 : QSO MgII absorption line systems (Drinkwater+, 1993)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/727/47https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/727/47http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/727/47https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/727/47https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/727/47http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/727/47GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/727/47/table1 (Mg II absorption in QSO-galaxy pairs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/727/47/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/727/47/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/727/47/table1?GETtext/xml+votable180.050000true16.504875-8.59916670.0055555555555555566/640 4103 4106 4126 4134 4148 4158 4162 4166 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32674 36788 36802 36804 48989https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/727/47?format=asciiOpticaldefaultJ/ApJ/727/47/table1Mg II absorption in QSO-galaxy pairsQSO7Simbad column added by the CDSmeta.id.assoccharDz? Difference {Delta}z between zabs and zCC2src.redshift;arith.difffloatnullableGalGalaxy SDSS name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQSOBackground SDSS QSO name (JHHMMSS.ss+DDMMSS.s) (1)meta.id.assoccharNpNumber of galaxies for this background quasarmeta.numberintnullablePlate? SDSS-DR6 Platemeta.noteintnullableMJD? SDSS-DR6 Modified Julian Datetime.epochintnullableFib? SDSS-DR6 Fibermeta.noteintnullablezQSO[0.766/2.095]? QSO emission redshiftsrc.redshift;pos.heliocentricfloatnullablezCC2[0.459/0.6] Galaxy photometry redshiftsrc.redshift;pos.heliocentricfloate_zCC2Uncertainty in zCC2stat.errorfloatrmagGalaxy r band model magnitude de-reddened for Milky Way dust absorptionmagphot.mag;meta.modelledfloatrMagSDSS absolute r band magnitude (2)magphys.magAbs;em.opt.RfloatASep[3.4/30] QSO-galaxy angular separationarcsecpos.angDistancefloatrho[20/197.1] QSO-galaxy impact parameterkpcsrc.impactParamfloatzabs[0.3779/0.6509]? Mg II absorption redshift (if doublet detected within {+/-}0.1 of zCC2)src.redshift;pos.heliocentricfloatnullablel_W2796The 2{sigma} upper limit flag on W2796meta.code.errorcharW2796Rest MgII (2796) equivalent width0.1nmspect.line.eqWidthfloate_W2796? Uncertainty in W27960.1nmstat.errorfloatnullablel_W2803The 2{sigma} upper limit flag on W2803meta.code.errorcharW2803Rest MgII (2803) equivalent width0.1nmspect.line.eqWidthfloate_W2803? Uncertainty in W28030.1nmstat.errorfloatnullableDR6+7Details from the SDSS-DR6 and SDSS-DR7 photometric catalog within 30" of the galaxy positionmeta.ref.urlcharSloanDisplay the SDSS data for this galaxymeta.ref.urlcharNEDNED column added by the CDSmeta.ref.urlchar_RAPositions from SDSS name of the galaxy (right ascension part)degpos.eq.ra;meta.main_DEPositions from SDSS name of the galaxy (declination part)degpos.eq.dec;meta.main