J/ApJS/193/28ivo://CDS.VizieR/J/ApJS/193/28doi:10.26093/cds/vizier.21930028CDSProchaska J.X.Weiner B.Chen H.-W.Cooksey K.L.Mulchaey J.S.2026-08-03T07:24:35Z2011-05-25T07:50:05ZCDS support team

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

cds-question@unistra.frredshiftedspectroscopygalaxiesphotometryquasarsWe publish the survey for galaxies in 20 fields containing ultraviolet bright quasars (with z_em_~0.1-0.5) that can be used to study the association between galaxies and absorption systems from the low-z intergalactic medium (IGM). The survey is magnitude limited (R~19.5mag) and highly complete out to 10' from the quasar in each field. It was designed to detect dwarf galaxies (L~0.1L*) at an impact parameter {rho}~1Mpc (z=0.1) from a quasar. The complete sample (all 20 fields) includes R-band photometry for 84718 sources and confirmed redshifts for 2800 sources. This includes 1198 galaxies with 0.005<z<(z_em_-0.01) at a median redshift of 0.18, which may associated with IGM absorption lines. All of the imaging was acquired with cameras on the Swope 40" telescope and the spectra were obtained via slit mask observations using the WFCCD spectrograph on the Dupont 100" telescope at Las Campanas Observatory.2011ApJS..193...28Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/193/28CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/392/1181 : BV(RI)c photometry of 3C 273 (Dai+, 2009)J/ApJ/676/262 : PKS1302-102 intergalactic absorption system (Cooksey+, 2008)J/ApJ/679/194 : Low-z intergalactic medium. III. (Danforth+, 2008)J/A+A/469/503 : VRIJHK observations of PKS 2155-304 (Dolcini+, 2007)J/ApJ/643/680 : Imaging and spectroscopy around PKS 0405-123 (Prochaska+,J/ApJ/617/718 : Atomic data and EW for PKS 0405-123 (Prochaska+, 2004)J/ApJS/155/351 : Absorption toward PG 1116+215 (Sembach+, 2004)http://www.ucolick.org/~xavier/WFCCDOVI/ : WFCCD OVI database onlinehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/193/28https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/193/28http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/193/28https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/193/28https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/193/28http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/193/28GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/193/28/table1 (Summary of fields surveyed)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/193/28/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/193/28/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/193/28/table1?GETtext/xml+votable180.050000true7.307513.2677780.005555555555555556Cone search capability for table J/ApJS/193/28/table4 (Summary of galaxies at z<z_em_+0.01)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/193/28/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/193/28/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/193/28/table4?GETtext/xml+votable180.050000true7.28833313.2744440.005555555555555556Cone search capability for table J/ApJS/193/28/objects (Objects detected in the fields)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/193/28/objects?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/193/28/objects?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/193/28/objects?GETtext/xml+votable180.050000true7.16791713.1394440.0055555555555555566/16671 16714 18601 18604 19575 19746 19752 22659 22662 22665 22668 25742-25743 25965 26292-26293 26509 26650 26672 27580 27714-27715 27720-27721 27731 27734 27737 27740 27859-27860 27862 28353 28356 31662-31663 32961 34064-34065 35741 35784 39456 39458 47014 47373 47375 47386https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/193/28?format=asciidefaultJ/ApJS/193/28/table1Summary of fields surveyedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTnometa.id;meta.datasetintprimaryFieldQuasar identificationobs.fieldcharprimaryRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainzeEmission redshiftsrc.redshift;pos.heliocentricfloatTint? FUSE total integration timekstime.epochintnullableRmaxMaximum R-band magnitudemagphot.mag;em.opt.RfloatSimbadNameSimbad column added by the CDSmeta.idcharnullableNEDNED column added by the CDSmeta.ref.urlcharNspecNumber of spectroscopically determined galaxy redshifts for objects with 0.005<z<z_em_meta.numberintC5Completeness percent of the spectroscopic survey in each field to R=19.5mag for a radius of 5'meta.noteintC10Completeness percent of the spectroscopic survey in each field to R=19.5mag for a radius of 10'meta.noteintSetHST UV spectroscopic data setsmeta.idcharJ/ApJS/193/28/table4Summary of galaxies at z<z_em_+0.01recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField nameobs.fieldcharzRangeRange in redshift consideredinstr.bandwidthIDGalaxy identification (Field_NNNNN)meta.id;meta.maincharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainzGalaxy redshiftsrc.redshiftdoubleLstarRelative luminosity (1)phys.luminosityfloatrhoImpact parameter (2)src.impactParamintTypeGalaxy type (Early, Late or Unkn) (3)src.classcharJ/ApJS/193/28/objectsObjects detected in the fieldsSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTnoID of fieldmeta.id;meta.datasetintSeqGalaxy identificationmeta.idintRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainindexedDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainindexedBmag? B band magnitude (not for table 8)magphot.mag;em.opt.Bfloatnullablee_Bmag? Uncertainty in Bmag (not for table 8)magstat.error;phot.magfloatnullableRmag? R band magnitudemagphot.mag;em.opt.Rfloatnullablee_Rmag? Uncertainty in Rmagmagstat.error;phot.magfloatnullableS/GSExtractor star/galaxy classifier (1)meta.id;meta.mainfloatAreaSource areaarcsec**2phys.areafloatflagBinary source flag (2)meta.code.errorintz? Spectroscopic redshiftsrc.redshiftdoublenullable