J/ApJ/714/1521ivo://CDS.VizieR/J/ApJ/714/1521doi:10.26093/cds/vizier.17141521CDSChen H.-W.Helsby J.E.Gauthier J.-R.Shectman S.A.Thompson I.B.,Tinker J.L.2017-12-05T05:09:37Z2012-05-25T08:13:25ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyline-intensitiesvisible-astronomysloan-photometryredshiftedquasarsWe report results from a survey of MgII absorbers in the spectra of background quasi-stellar objects (QSOs) that are within close angular distances to a foreground galaxy at z<0.5, using the Magellan Echellette Spectrograph. We have established a spectroscopic sample of 94 galaxies at a median redshift of <z>=0.24 in fields around 70 distant background QSOs (z_QSO_>0.6), 71 of which are in an "isolated" environment with no known companions and located at {rho}<~120h^-1^kpc from the line of sight of a background QSO. The rest-frame absolute B-band magnitudes span a range from M_B_-5logh=-16.4 to M_B_-5logh=-21.4 and rest-frame B_AB_-R_AB_ colors range from B_AB_-R_AB_~0 to B_AB_-R_AB_~1.5. Of these "isolated" galaxies, we find that 47 have corresponding MgII absorbers in the spectra of background QSOs and rest-frame absorption equivalent width W_r_(2796)=0.1-2.34{AA}, and 24 do not give rise to MgII absorption to sensitive upper limits.2010ApJ...714.1521Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/714/1521CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/306 : The SDSS Photometric Catalog, Release 8 (Adelman-McCarthy+, 2011)VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)J/ApJS/194/42 : SDSS-DR3 MgII-based black hole masses (Rafiee+, 2011)J/ApJ/698/819 : MgII and LRGs cross-correlation analysis (Lundgren+, 2009)J/ApJ/679/239 : Associated MgII absorbers (Vanden+, 2008)J/ApJ/639/766 : SDSS-DR3 strong MgII absorbers (Prochter+, 2006)J/MNRAS/371/495 : Catalogue of 1806 MgII absorbers from SDSS (Bouche+, 2006)J/MNRAS/354/L25 : MgII absorbers in SDSS QSOs (Bouche+, 2004)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/714/1521https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/714/1521http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/714/1521https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/714/1521https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/714/1521http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/714/1521GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/714/1521/table1 (Summary of faint galaxy spectroscopy)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/714/1521/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/714/1521/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/714/1521/table1?GETtext/xml+votable180.050000true8.41525-0.92176670.005555555555555556Cone search capability for table J/ApJ/714/1521/table2 (Summary of the MagE spectroscopic observations of SDSS QSOs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/714/1521/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/714/1521/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/714/1521/table2?GETtext/xml+votable180.050000true8.4175417-0.92375830.0055555555555555566/4105 4162 4176 4191 4200 4256 4738 4742 4751 4760 4774 8244 8281 8359 8737 12394 17244 17324 17575 17725 17752 17998 18020 18023 18067 18519 18526 18552 18686 18687 18780 18856 19038 19383 19405 21851 21873 21972 22718 23145 23216 25955 26025 26227 26252 26278 26284 26428 26560 26975 27229 27251 27254 27396 27497 27789 27791 27818 27932 30040 30046 31311 31331 31393 31434 31454 31622 36792 49015https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/714/1521?format=asciiOpticaldefaultJ/ApJ/714/1521/table1Summary of faint galaxy spectroscopySimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS-DR6 designation (JHHMMSS.ss+DDMMSS.ss)meta.id;meta.maincharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainzph? Photometric redshiftsrc.redshiftfloatnullablee_zph? zph uncertaintystat.errorfloatnullableInst[DIS /MagE/SDSS] Instrument used (1)instr.setupcharmult? Exposure multiplicatormeta.numberintnullableExp? Exposure timestime.duration;obs.exposureintnullablemult2? Second exposure multiplicatormeta.numberintnullableExp2? Additional exposure timestime.duration;obs.exposureintnullableDateUT date of observationtime.epoch;obsnullableDR6+8Link to SDSS photometric catalog DR6 and DR8 within 1.5"meta.ref.urlcharSloanDisplay the SDSS online data around the position of this objectmeta.ref.urlcharNEDSimbad column added by the CDSmeta.refcharJ/ApJ/714/1521/table2Summary of the MagE spectroscopic observations of SDSS QSOsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS-DR6 designation (JHHMMSS.ss+DDMMSS.ss)meta.id;meta.maincharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainz? QSO redshiftsrc.redshiftfloatnullableu'magu'-band magnitudemagphot.mag;em.opt.Ufloatmult? Exposure multiplicatormeta.numberintnullableExp? Exposure timetime.duration;obs.exposureintnullableExp2? Additional exposure timetime.duration;obs.exposureintnullableDateUT date of observationtime.epoch;obsnullableDR6+8Link to SDSS photometric catalog DR6 and DR8 within 1.5"meta.ref.urlcharDR7qsoLink to SDSS-DR7 quasar catalog within 1.5"meta.ref.urlcharSloanDisplay the SDSS online data around the position of this objectmeta.ref.urlcharNEDSimbad column added by the CDSmeta.refcharJ/ApJ/714/1521/table3Galaxies and absorption systemsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSet[G /GrG] GrG: "Group" galaxies vs "isolated" environmentmeta.idcharSDSSSDSS-DR6 designation (JHHMMSS.ss+DDMMSS.ss)meta.id;meta.mainchardRARight ascension offset from the QSOarcsecpos.eq.ra;arith.difffloatdDEDeclination offset from the QSOarcsecpos.eq.dec;arith.difffloatzgalGalaxy redshift (spectroscopic)src.redshiftfloatrhoImpact parameter ({rho}) in h^-1^*kpc unitskpcmeta.unit;src.impactParamfloatr'magApparent r'-band magnitudemagphot.mag;em.opt.RfloatMBAbsolute B-band magnitude (M_B_-5logh)magphys.magAbs;em.opt.BfloatB-RB_AB_-R_AB_ color indexmagphot.color;em.opt.B;em.opt.Rfloatzabs? Redshift of the corresponding MgII absorption featuresrc.redshiftfloatnullablel_W2796Limit flag on W2796meta.code.errorcharW2796? Absorption equivalent width of the corresponding MgII absorption feature0.1nmphys.absorptionfloatnullablee_W2796? W2796 uncertainty0.1nmstat.errorfloatnullable