J/ApJ/742/125ivo://CDS.VizieR/J/ApJ/742/125doi:10.26093/cds/vizier.17420125CDSGeorge M.R.Leauthaud A.Bundy K.Finoguenov A.Tinker J.Lin Y.-T.,Mei S.Kneib J.-P.Aussel H.Behroozi P.S.Busha M.T.Capak P.,Coccato L.Covone G.Faure C.Fiorenza S.L.Ilbert O.Le Floc'h E.,Koekemoer A.M.Tanaka M.Wechsler R.H.Wolk M.2022-04-04T08:42:55Z2021-02-08T11:28:17ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsx-ray-sourcesvisible-astronomyspectroscopyredshiftedUnderstanding the mechanisms that lead dense environments to host galaxies with redder colors, more spheroidal morphologies, and lower star formation rates than field populations remains an important problem. As most candidate processes ultimately depend on host halo mass, accurate characterizations of the local environment, ideally tied to halo mass estimates and spanning a range in halo mass and redshift, are needed. In this work, we present and test a rigorous, probabilistic method for assigning galaxies to groups based on precise photometric redshifts and X-ray-selected groups drawn from the COSMOS field. The groups have masses in the range 10^13^<~M_200c_/M_{sun}_<~10^14^ and span redshifts 0<z<1. We characterize our selection algorithm via tests on spectroscopic subsamples, including new data obtained at the Very Large Telescope, and by applying our method to detailed mock catalogs. We find that our group member galaxy sample has a purity of 84% and completeness of 92% within 0.5R_200c_. We measure the impact of uncertainties in redshifts and group centering on the quality of the member selection with simulations based on current data as well as future imaging and spectroscopic surveys. As a first application of our new group member catalog which will be made publicly available, we show that member galaxies exhibit a higher quenched fraction compared to the field at fixed stellar mass out to z~1, indicating a significant relationship between star formation and environment at group scales. We also address the suggestion that dusty star-forming galaxies in such groups may impact the high-l power spectrum of the cosmic microwave background and find that such a population cannot explain the low power seen in recent Sunyaev-Zel'dovich measurements.2011ApJ...742..125Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/742/125CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)VII/265 : COSMOS Morphological Catalog (V1.1) (Tasca+ 2009)J/ApJ/502/558 : Catalog of ROSAT galaxy clusters (Vikhlinin+ 1998)J/ApJ/496/39 : Properties of poor groups of galaxies. I. (Zabludoff+ 1998)J/ApJ/549/172 : X-ray-detected, poor groups galaxy populations (Tran+, 2001)J/MNRAS/348/866 : 2dFGRS Percolation-Inferred Gal. Group (2PIGG) (Eke+, 2004)J/ApJ/625/6 : Gal. groups in DEEP2 Galaxy Redshift Survey (Gerke+, 2005)J/ApJS/157/1 : Red-Sequence Cluster Survey (Gladders+, 2005)J/AJ/130/968 : SDSS-C4 cluster catalog (Miller+, 2005)J/ApJS/167/1 : Galaxy groups and clusters from SDSS (Berlind+, 2006)J/ApJ/644/100 : SDSS quasars in the COSMOS field (Prescott+, 2006)J/ApJS/172/182 : XMM Clusters of galaxies in COSMOS field (Finoguenov+ 2007)J/ApJS/172/29 : XMM-Newton survey in COSMOS field. I. (Hasinger+, 2007)J/ApJS/172/70 : zCOSMOS-bright catalog (Lilly+, 2007)J/ApJS/172/368 : XMM-Newton survey in COSMOS field. IV. (Mainieri+, 2007)J/A+A/461/81 : Galaxy clusters in the CFHTLS (Olsen+, 2007)J/A+A/497/635 : XMM-Newton wide-field survey in COSMOS (Cappelluti+, 2009)J/ApJS/184/158 : Chandra COSMOS survey I. (Elvis+, 2009)J/A+A/494/845 : Galaxy clusters in the CFHTLS (Grove+, 2009)J/ApJ/690/1236 : COSMOS photometric redshift catalog (Ilbert+, 2009)J/ApJ/697/1842 : zCOSMOS 10K sample group catalog to z=1 (Knobel+, 2009)J/MNRAS/403/2063 : SXDF X-ray groups and galaxy clusters (Finoguenov+, 2010)J/MNRAS/413/1145 : Galaxy clusters in the COSMOS field (Bellagamba+, 2011)J/ApJ/753/121 : zCOSMOS 20k sample group catalog to z<~1.2 (Knobel+, 2012)J/ApJ/790/16 : X-ray ETGs in the Chandra COSMOS survey (Civano+, 2014)J/ApJ/865/43 : X-ray analysis of Chandra-COSMOS gal. (Fornasini+, 2018)http://irsa.ipac.caltech.edu/data/COSMOS/ : COSMOS home page on NASA/IPAC IRSAhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/742/125https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/742/125http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/742/125https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/742/125https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/742/125http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/742/125GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/742/125/xgroups (COSMOS X-ray group membership catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/742/125/xgroups?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/742/125/xgroups?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/742/125/xgroups?GETtext/xml+votable180.050000true150.197641.65846580.005555555555555556Cone search capability for table J/ApJ/742/125/xgal (COSMOS galaxy membership catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/742/125/xgal?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/742/125/xgal?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/742/125/xgal?GETtext/xml+votable180.050000true149.485876642.504516570.0055555555555555565/6814 6/27245 27247 273442.3657755224268815e-19 2.565265938961496e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/742/125?format=asciiX-rayOpticaldefaultJ/ApJ/742/125/xgroupsCOSMOS X-ray group membership catalogGID[11/345] Group ID number (<[GLB2011] Group NNN> in Simbad) (GROUP_ID)meta.idintprimary[GLB2011]COSMOS CL JHHMMSS.s+DDMMSS name (NAME)meta.id;meta.maincharz[0.078/1] Group redshift (REDSHIFT) (1)src.redshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[149.4/151] X-ray right ascension (J2000) (RA)degpos.eq.ra;meta.mainDEJ2000[1.5/3] X-ray declination (J2000) (DEC)degpos.eq.dec;meta.mainePos[0.00014/0.009] Position uncertainty of X-ray source (XRAY_POS_ERR)degstat.error;posfloate_z[0.00013/0.014] z uncertainty (REDSHIFT_ERR)stat.error;src.redshiftfloatlogLx[41.3/44.1] Log of X-ray luminosity in the rest-frame 0.1-2.4keV band; in erg/s units (LX)log(1e-07W)phys.luminosity;em.X-rayfloate_logLx[40.7/42.9] logLx uncertainty (LX_ERR)log(1e-07W)stat.errorfloatLxScale[41.3/43.9] log of scaled X-ray luminosity (Lx/E(z)) (LX_SCALE)phys.luminosity;em.X-rayfloatFx[-15.5/-12.7] log of extrapolated 0.5-2kev flux within R500 in ergs/s/cm^2^ (XRAY_FLUX)log(mW.m**-2)phot.flux;em.X-rayfloate_Fx[-15.7/-14.3] Fx uncertainty (XRAY_FLUX_ERR)log(mW.m**-2)stat.errorfloatMask[0/1] Mask flag (1=masked, 0=clean) (FLAG_MASK)meta.codeintPoor[0/1] Poor group flag (1=three or fewer members, 0=4+ members) (FLAG_POOR)meta.codeintMerger[0/4] Merger flag (N=number of overlapping groups) (FLAG_MERGER)meta.codeintQual[0/1] Combined quality flag (1=good (129 occurrences) or 0=bad) (FLAG_INCLUDE)meta.code.qualintlogM200c[12.8/14.4] log Mass M_200c_ (M200C)log(solMass)phys.massfloatR200c[0.36/1.1] Physical radius R_200c_ (R200C_MPC)Mpcphys.size.radiusfloatAR200c[53/347.1] Angular radius at group redshift (R200C_AS)arcsecphys.angSizefloatConc200c[3.5/5.4] Concentration c_200c_ (C=R200/Rscale)meta.notefloatNmm[0/219] Number of group members (P_MEM>0.5) (NMEM)meta.numberintNgNumber of sources around this group (link to xgal table)meta.numberintnullablePmm[0/166.418] Sum of P_MEM over all galaxies (NMEM_W)stat.fit.goodnessfloatRAMdeg[149.4/151]? Right ascension of Most Massive Group Galaxy within NFW scale radius (J2000) (RA_MMGGS)degpos.eq.ranullableDEMdeg[1.6/3]? Declination of Most Massive Group Galaxy within NFW scale radius (J2000) (DEC_MMGGS)degpos.eq.decnullableMMGGS[1050/200932]? ID number of Most Massive Group Galaxy within Navarro-Frenk-White (NFW) scale radius (MMGGS) (ID_MMGGS)meta.idintnullablelogMM[9/12]? Log of stellar mass of MMGGS (SM_MMGGS)log(solMass)phys.massfloatnullableRAZdeg[149.4/151]? RA_MMGGS using spectroscopic redshift (RA_MMGGS_ZBEST)degpos.eq.ranullableDEZdeg[1.6/3]? DEC_MMGGS using spectroscopic redshift (DEC_MMGGS_ZBEST)degpos.eq.decnullableIDzM[1050/200991]? ID_MMGGS using spectroscopic redshift (ID_MMGGS_ZBEST)meta.idintnullablexFlag[1/3] X-ray quality flag (2)meta.code.qualintJ/ApJ/742/125/xgalCOSMOS galaxy membership catalogSimbadNameSimbad column added by the CDSmeta.idcharnullableID[2/1443962] Galaxy ID number (<[GLB2011] Galaxy NNNNNNN> in Simbad) (GAL_ID)meta.id;meta.mainintGID[11/345]?=-1 Group ID number of most likely group (GROUP_ID)meta.id.parentintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintF814mag[15/24.2] HST/ACS F814W SExtractor AB magnitude (Leauthaud+, 2007ApJS..172..219L) (MAG_AUTO)magphot.mag;em.opt.IfloatRAJ2000[149.4/150.8] Right ascension (J2000) (RA)degpos.eq.ra;meta.mainindexedDEJ2000[1.5/2.9] Declination (J2000) (DEC)degpos.eq.dec;meta.mainindexedlogM[5.1/12.1] Log of stellar mass (SM)log(solMass)phys.massdoublee_logM[4.7e-7/0.4] LogM uncertainty (EM_ERR)log(solMass)stat.errordoublezphot[0.001/4.7]? Photometric redshift from Ilbert+, 2009, J/ApJ/690/1236src.redshiftfloatnullablee_zphot[0.0015/4.7]? Lower uncertainty on zphot (ZPHOT_ERRLO)stat.errorfloatnullableE_zphot[0.008/5]? Upper uncertainty on zphot (ZPHOT_ERRHI)stat.error;stat.maxfloatnullableMMGGS[0/1] Most Massive Group Galaxy within Navarro-Frenk-White (NFW) scale radius (Rs=R_200c_/c_200c_)meta.codeintPmm[0/1] Membership probability (P_MEM)stat.probabilityfloatf_GID[0/1] Group flag (1=good, 0=bad) (GROUP_FLAG)meta.codeintDist[0/1]? Projected distance to MMGGS of Group ID (R/R200) (DIST_MMGGS)pcpos.distancefloatnullableMMGGz[0/1] MMGGS using GAL_ID's spectroscopic redshift (MMGGS_ZBEST)meta.codeintPMMGGz[0/1] Membership probability using GAL_ID's spectroscopic redshift (P_MEM_ZBEST)stat.probability;src.redshiftfloatGIDz[11/345]? GROUP_ID using GAL_ID's spectroscopic redshift (GROUP_ID_ZBEST)meta.id.parentintnullablef_GIDz[0/1] Group flag using GAL_ID's spectroscopic redshift (GROUP_FLAG_ZBEST)meta.codeintDistz[0/1]? DIST_MMGGS using GAL_ID's spectroscopic redshift (R/R200) (DIST_MMGGS_ZBEST)pos.distancefloatnullableNUV-R[-0.85/6.4] NUV-R color index (MNUV_MR)magphot.color;em.UV;em.optfloatI09Display data from Ilbert+, 2009, J/ApJ/690/1236, within 1.5"meta.ref.urlintnullable