J/ApJS/216/20ivo://CDS.VizieR/J/ApJS/216/20doi:10.26093/cds/vizier.22160020CDSBleem L.E.Stalder B.Brodwin M.Busha M.T.Gladders M.D.High F.W.,Rest A.Wechsler R.H.2017-10-16T11:05:06Z2015-03-10T08:19:46ZCDS support team

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

cds-question@unistra.frgalaxy-clustersinfrared-photometryvisible-astronomyWide-band photometrysurveysredshiftedThe Blanco Cosmology Survey is a four-band (griz) optical-imaging survey of ~80deg^2^ of the southern sky. The survey consists of two fields centered approximately at (RA,DE)=(23h,-55{deg}) and (5h30m,-53{deg}) with imaging sufficient for the detection of L_*_ galaxies at redshift z<=1. In this paper, we present our reduction of the survey data and describe a new technique for the separation of stars and galaxies. We search the calibrated source catalogs for galaxy clusters at z<=0.75 by identifying spatial over-densities of red-sequence galaxies and report the coordinates, redshifts, and optical richnesses, {lambda}, for 764 galaxy clusters at z<=0.75. This sample, >85% of which are new discoveries, has a median redshift of z=0.52 and median richness {lambda}(0.4L_*_)=16.4.2015ApJS..216...20Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/216/20CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/91 : Planck Catalog of Compact Sources Release 1 (Planck, 2013)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)VI/96 : Evolutionary Sequences (Fagotto+ 1993-96)VII/110 : Rich Clusters of Galaxies (Abell+ 1989)J/ApJS/209/22 : SSDF survey: IRAC catalogs (Ashby+, 2013)J/ApJ/763/127 : Gal. clusters discovered in the SPT survey (Reichardt+, 2013)J/ApJ/761/22 : NIR galaxy cluster candidates in the SPT survey (Song+, 2012)J/ApJ/757/83 : The Blanco Cosmology Survey (BCS) (Desai+, 2012)J/ApJ/746/178 : The augmented maxBCG cluster catalog (Rykoff+, 2012)J/ApJS/200/9 : The ACS-GC catalog (Griffith+, 2012)J/ApJS/199/34 : Clusters of galaxies in SDSS-III (Wen+, 2012)J/ApJ/742/48 : Blanco survey of the lens BCS J2352-5452 (Buckley-Geer+, 2011)J/ApJ/736/21 : Gal. clusters opt. catalog from AMF on SDSS DR6 (Szabo+ 2011)J/ApJS/191/340 : Southern Cosmology Survey. II. (Menanteau+, 2010)J/ApJS/191/254 : GMBCG galaxy cluster catalog from SDSS DR7 (Hao+, 2010)J/ApJS/183/197 : Galaxy clusters identified from the SDSS-DR6 (Wen+, 2009)J/ApJ/701/428 : The Spitzer Deep, Wide-Field Survey (SDWFS) (Ashby+, 2009)J/MNRAS/393/1275 : STAGES master catalog (Gray+, 2009)J/AJ/134/2398 : Stellar SEDs in SDSS and 2MASS filters (Covey+, 2007)J/ApJ/660/239 : MaxBCG cat. of galaxy clusters from SDSS (Koester+, 2007)J/ApJS/157/1 : Red-Sequence Cluster Survey (Gladders+, 2005)J/A+A/425/367 : REFLEX Galaxy Cluster Survey catalogue (Boehringer+, 2004)J/ApJ/502/558 : Catalog of ROSAT galaxy clusters (Vikhlinin+ 1998)http://data.rcc.uchicago.edu/dataset/blanco-cosmology-survey : Blancohttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/216/20https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/216/20http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/216/20https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/216/20https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/216/20http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/216/20GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/216/20/table3 (Summary information for BCS data presented in this work)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/216/20/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/216/20/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/216/20/table3?GETtext/xml+votable180.050000true76.708-56.0150.005555555555555556Cone search capability for table J/ApJS/216/20/table5 (Optically-selected Galaxy Clusters located in the 23h BCS field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/216/20/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/216/20/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/216/20/table5?GETtext/xml+votable180.050000true348.0766-51.15480.005555555555555556Cone search capability for table J/ApJS/216/20/table6 (Optically-selected Galaxy Clusters located in the 5h BCS field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/216/20/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/216/20/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/216/20/table6?GETtext/xml+votable180.050000true76.6001-54.39250.0055555555555555564/2119 5/8468 8470 8471 8473 8474 8475 8514 8520 11533 11539 11540 11542 11543 11544 11545 11548 6/33853 33863 33869 33870 33871 33878 33879 33889 33890 33891 34050 34051 34054 34055 34060 34061 34062 34066 34088 34089 34090 46149 46150 46151 46153 46154 46155 46164 46166 46167 46185 46188 46189 46196 46197 46198 46200 46201 46204 46338 46339 46344 46345 46346https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/216/20?format=asciiInfraredOpticaldefaultJ/ApJS/216/20/table3Summary information for BCS data presented in this workrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBCSBlanco Cosmology Survey tile (HHMM+DDMM)obs.fieldcharRAJ2000Right Ascension in decimal degrees (J2000) (1)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000) (1)degpos.eq.dec;meta.maingSeeSeeing in g band images (2)arcsecinstr.obsty.seeingfloatrSeeSeeing in r band images (2)arcsecinstr.obsty.seeingfloatiSeeSeeing in i band images (2)arcsecinstr.obsty.seeingfloatzSeeSeeing in z band images (2)arcsecinstr.obsty.seeingfloatgDepth[22.9/25.1] g band 5{sigma} point source depth (3)maginstr.sensitivityfloatrDepthr band 5{sigma} point source depth (3)maginstr.sensitivityfloatiDepthi band 5{sigma} point source depth (3)maginstr.sensitivityfloatzDepth[20.7/22.9] z band 5{sigma} point source depth (3)maginstr.sensitivityfloatLimit[20.1/22.5] Star limit (4)maginstr.sensitivityfloatComComments on tile (5)meta.note;obs.fieldcharJ/ApJS/216/20/table5Optically-selected Galaxy Clusters located in the 23h BCS fieldrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLCS-CLIdentifier (JHHMMSS+DDMM.m) (1)meta.id;meta.maincharRAJ2000BCG right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000BCG declination in decimal degrees (J2000)degpos.eq.dec;meta.mainz[0.1/0.8] Red-sequence redshiftsrc.redshiftfloate_z[0.02/0.07] Uncertainty in zstat.error;src.redshiftfloatSigni[3/7] Detection significancestat.fit.goodness;instr.saturationfloatOR0.4[10/65] Optical richness {lambda} for z<0.55src.class.richnessfloate_OR0.4Uncertainty in OR0.4stat.errorintdOR0.4[0/23] {Delta}{lambda}, amount the optical richness was boosted to account for maskinginstr.paramfloatOR0.2? {lambda}(0.2L_*_) Optical richness for z<0.55src.class.richnessfloatnullablee_OR0.2? Uncertainty in OR0.2stat.errorintnullabledOR0.2? {Delta}{lambda}(0.2L_*_), amount OR0.2 was boosted to account for maskinginstr.paramfloatnullableM200[0/1] Fraction of area masked within 200 kpcphys.areafloatM500[0/1] Fraction of area masked within 500kpcphys.areafloatEdge[1]? Edge of tile flag (1=yes, near edge)meta.codeintnullablePIDPreviously identified (2)meta.bibcharBCSPresence within 2" in the BCS catalog (J/ApJ/757/83)meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJS/216/20/table6Optically-selected Galaxy Clusters located in the 5h BCS fieldPIDPreviously identified (2)meta.bibcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLCS-CLIdentifier (JHHMMSS+DDMM.m) (1)meta.id;meta.maincharRAJ2000BCG right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000BCG declination in decimal degrees (J2000)degpos.eq.dec;meta.mainz[0.1/0.8] Red-sequence redshiftsrc.redshiftfloate_z[0.02/0.07] Uncertainty in zstat.error;src.redshiftfloatSigni[3/7] Detection significancestat.fit.goodness;instr.saturationfloatOR0.4[10/65] Optical richness {lambda} for z<0.55src.class.richnessfloate_OR0.4Uncertainty in OR0.4stat.errorintdOR0.4[0/23] {Delta}{lambda}, amount the optical richness was boosted to account for maskinginstr.paramfloatOR0.2? {lambda}(0.2L_*_) Optical richness for z<0.55src.class.richnessfloatnullablee_OR0.2? Uncertainty in OR0.2stat.errorintnullabledOR0.2? {Delta}{lambda}(0.2L_*_), amount OR0.2 was boosted to account for maskinginstr.paramfloatnullableM200[0/1] Fraction of area masked within 200 kpcphys.areafloatM500[0/1] Fraction of area masked within 500kpcphys.areafloatEdge[1]? Edge of tile flag (1=yes, near edge)meta.codeintnullableBCSPresence within 2" in the BCS catalog (J/ApJ/757/83)meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar