J/ApJ/923/44ivo://CDS.VizieR/J/ApJ/923/44doi:10.26093/cds/vizier.19230044CDSScott J.E.Shoemaker E.S.Hamill C.D.2023-11-03T12:17:36Z2023-07-19T11:05:29ZCDS support team

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

cds-question@unistra.frintergalactic-mediumquasarsspectroscopyultraviolet-astronomyredshiftedline-intensitiesvisible-astronomysloan-photometryabsolute-magnitudegalaxiesWe present a study of candidate galaxy-absorber pairs for 43 low-redshift QSO sightlines (0.06<z<0.85) observed with the Hubble Space Telescope/Cosmic Origins Spectrograph that lie within the footprint of the Sloan Digital Sky Survey with a statistical approach to match absorbers with galaxies near the QSO lines of sight using only the SDSS Data Release 12 photometric data for the galaxies, including estimates of their redshifts. Our Bayesian methods combine the SDSS photometric information with measured properties of the circumgalactic medium to find the most probable galaxy match, if any, for each absorber in the line-of-sight QSO spectrum. We find ~630 candidate galaxy-absorber pairs using two different statistics. The methods are able to reproduce pairs reported in the targeted spectroscopic studies upon which we base the statistics at a rate of 72%. The properties of the galaxies comprising the candidate pairs have median redshift, luminosity, and stellar mass, all estimated from the photometric data, z=0.13, L=0.1L*, and log(M_*_/M_{sun}_)=9.7. The median impact parameter of the candidate pairs is ~430kpc, or ~3.5 times the galaxy virial radius. The results are broadly consistent with the high Ly{alpha} covering fraction out to this radius found in previous studies. This method of matching absorbers and galaxies can be used to prioritize targets for spectroscopic studies, and we present specific examples of promising systems for such follow-up.2021ApJ...923...44Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/923/44CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)J/ApJ/508/200 : QSO low-z Ly{alpha} absorbers (Tripp+, 1998)J/ApJ/559/654 : Ly{alpha} absorption systems. V. (Chen+, 2001)J/ApJ/701/1219 : Galaxy survey in 3 QSO fields (Chen+, 2009)J/ApJS/182/378 : HI and OVI absorbers in nearby Universe (Wakker+, 2009)J/ApJS/193/28 : Galaxy survey around 20 UV-bright quasars (Prochaska+, 2011)J/ApJ/740/91 : Lya & OVI in galaxies around quasars (Prochaska+, 2011)J/MNRAS/445/2061 : Abs. in multiphase circumgalactic medium (Liang+, 2014)J/MNRAS/437/2017 : HI-galaxy cross-correlation at z<~1 (Tejos+, 2014)J/ApJ/815/91 : z<0.16 CIV absorbers from HST/COS QSOs sp. (Burchett+, 2015)J/MNRAS/452/2553 : Sample of foreground-background QSO pairs (Johnson+, 2015)J/ApJ/817/111 : HST/COS survey of z<0.9 AGNs. I. (Danforth+, 2016)J/A+A/590/A68 : AGN data and absorption-line measurements (Richter+, 2016)J/ApJS/230/6 : HST-COS & -STIS absorption-line sp. II. (Keeney+, 2017)J/ApJS/237/11 : Gal. z survey near HST/COS AGN sight lines (Keeney+, 2018)J/MNRAS/486/21 : QSO Sightline and Galaxy Evolution Survey I (Bielby+, 2019)J/ApJ/883/78 : Column densities of CGM absorption lines (Pointon+, 2019)J/ApJS/243/24 : The CASBaH galaxy redshift survey (Prochaska+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/923/44https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/923/44http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/923/44https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/923/44https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/923/44http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/923/44GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/923/44/table1 (HST/COS QSO in SDSS footprint)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/923/44/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/923/44/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/923/44/table1?GETtext/xml+votable180.050000true1.496833316.16361110.005555555555555556Cone search capability for table J/ApJ/923/44/table4 (Galaxy-absorber pairs: P(r_vir_))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/923/44/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/923/44/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/923/44/table4?GETtext/xml+votable180.050000true158.92150.10.005555555555555556Cone search capability for table J/ApJ/923/44/table5 (Galaxy-absorber pairs: P(M*))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/923/44/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/923/44/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/923/44/table5?GETtext/xml+votable180.050000true157.50650.8470.0055555555555555566/2615 2621 4821 4992 5091 5097 5244-5246 5257 5262 5274 5284 5296 5353 5355 5409-5410 5437 5474-5475 5481 5483 5686-5687 5731 5734 5738 5790 5814 5817 5820-5821 5935 5995 6020-6021 6081 6093 6104 6606-6607 7277 7508 7510 8838 8915 9031 9037 9042 9192 9194 10162 10472 10560 11217-11218 12380 17817 17819 18769 18772 19700 19709 19746 26270 26292-26293 26295 26509 27022-27023 27714 27720-27721 28059-28060 28083-28084 28086 28355-28356 28583 28589 31662-31663https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/923/44?format=asciiUVOpticaldefaultJ/ApJ/923/44/table1HST/COS QSO in SDSS footprintSimbadNameSimbad column added by the CDSmeta.idcharnullableNEDNED column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameFull Quasar namemeta.id;meta.maincharprimaryQSOShort name for QSO as used in Tables 4 and 5meta.idcharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainzem[0.063/0.852] QSO emission redshiftsrc.redshiftfloatNpvirNumber of P(rvir) galaxy-abs pairs (link to Table 4)meta.numberintnullableNpmassNumber of P(Ms) galaxy-abs pairs (link to Table 5)meta.numberintnullableNlNumber of literature measurements for this QSO (link to Table 6)meta.numberintnullableJ/ApJ/923/44/table4Galaxy-absorber pairs: P(r_vir_)rmag[14.14/21.54] Galaxy extinction corrected AB magnitude from SDSSmagphot.mag;em.opt.RfloatrMag[-23.04/-15.9] Galaxy absolute r magnitudemagphys.magAbs;em.opt.RfloatRad[45.5/241] Galaxy virial radius (4)kpcphys.size.radiusfloatlogMs[8/11.71] Galaxy stellar mass (5)log(solMass)phys.massfloatSDSSGalaxy SDSS DR12 objIDmeta.id.parentFlagAbsorption flag (6)meta.code.errorcharSloanDisplay the online SDSS DR12 data for the SDSS galaxymeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQSOShort name for QSOmeta.id;meta.maincharPtotTotal Probability (1)stat.fit.goodnesscharImpact[18.9/500] Galaxy-absorber projected separation (2)kpcpos.angDistancefloatIonIon, in TeX formatphys.atmol.ionStagezabsAbsorber redshiftsrc.redshiftcharWrest[5.39/2797] Absorber rest equivalent width, in milli-Angstroms0.1pmspect.line.eqWidthdoublee_Wrest[0.89/575] Wrest uncertainty0.1pmstat.errorfloatP(Ion)Probability for ion (3)stat.fit.goodnesscharzphotGalaxy photometric redshift from SDSSsrc.redshiftcharRAJ2000[0.48/358.4] Galaxy Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-1.21/66] Galaxy Declination (J2000)degpos.eq.dec;meta.mainJ/ApJ/923/44/table5Galaxy-absorber pairs: P(M*)rmag[14.14/21.54] Galaxy extinction corrected AB magnitude from SDSSmagphot.mag;em.opt.RfloatrMag[-23.04/-15.9] Galaxy absolute r magnitudemagphys.magAbs;em.opt.RfloatRad[45.5/241] Galaxy virial radius (4)kpcphys.size.radiusfloatQSOShort name for QSOmeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPtotTotal Probability (1)stat.fit.goodnesscharImpact[18.9/500] Galaxy-absorber projected separation (2)kpcpos.angDistancefloatIonIon, in TeX formatphys.atmol.ionStagezabsAbsorber redshiftsrc.redshiftcharWrest[5.39/2797] Absorber rest equivalent width, in milli-Angstroms0.1pmspect.line.eqWidthdoublee_Wrest[0.89/575] Wrest uncertainty0.1pmstat.errorfloatP(Ion)Probability for ion (3)stat.fit.goodnesscharzphotGalaxy photometric redshift from SDSSsrc.redshiftcharRAJ2000[0.48/358.4] Galaxy Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-1.21/66] Galaxy Declination (J2000)degpos.eq.dec;meta.mainlogMs[8/11.71] Galaxy stellar mass (5)log(solMass)phys.massfloatSDSSGalaxy SDSS DR12 objIDmeta.id.parentFlagAbsorption flag (6)meta.code.errorcharSloanDisplay the online SDSS DR12 data for the SDSS galaxymeta.ref.urlcharJ/ApJ/923/44/table6Galaxy-absorber pairs in the literatureSimbadNameSimbad column added by the CDSmeta.idcharnullableGalaxyGalaxy namemeta.id.parentcharomag[10.2/22.4] Observed magnitude in Filtmagphot.magfloatFiltFilter for omagmeta.id;instr.filtercharzgal[0.00137/0.241] Galaxy redshiftsrc.redshiftdoublezabs[0.00137/0.241] Absorber redshiftsrc.redshiftdoublef_EWLyman line flag (1)meta.codecharNameQSO namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintrho[12/1742] galaxy-absorber impact parameterkpcsrc.impactParamintEW[6/1630] Equivalent width Lyman line, in milli-Angstroms (1)0.1pmspect.line.eqWidthfloate_EW[0.1/173]? Uncertainty in EW0.1pmstat.error;spect.line.eqWidthfloatnullabler_EWReference(s) for EW (2)meta.ref;spect.line.eqWidthcharn_Galaxy[1/4] SDSS Note (3)meta.noteintR-rvir[1/10]? Rank of galaxy-absorber pair, r_vir (4)meta.numberintnullableR-MI[1/10]? Rank of galaxy-absorber pair, M* (4)meta.numberintnullablezphot[0.01/0.4]? Photometric redshiftsrc.redshiftfloatnullable