J/ApJ/837/88ivo://CDS.VizieR/J/ApJ/837/88doi:10.26093/cds/vizier.18370088CDSBayliss M.B.Zengo K.Ruel J.Benson B.A.Bleem L.E.Bocquet S.,Bulbul E.Brodwin M.Capasso R.Chiu I.-N.McDonald M.Rapetti D.,Saro A.Stalder B.Stark A.A.Strazzullo V.Stubbs C.W.Zenteno A.2020-01-29T13:45:47Z2017-11-21T12:54:15ZCDS support team

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

cds-question@unistra.frgalaxy-clustersspectroscopyredshiftedline-intensitiesgalaxy-kinematicsThe velocity distribution of galaxies in clusters is not universal; rather, galaxies are segregated according to their spectral type and relative luminosity. We examine the velocity distributions of different populations of galaxies within 89 Sunyaev Zel'dovich (SZ) selected galaxy clusters spanning 0.28<z<1.08. Our sample is primarily draw from the SPT-GMOS spectroscopic survey, supplemented by additional published spectroscopy, resulting in a final spectroscopic sample of 4148 galaxy spectra -- 2868 cluster members. The velocity dispersion of star-forming cluster galaxies is 17+/-4% greater than that of passive cluster galaxies, and the velocity dispersion of bright (m<m^*^-0.5) cluster galaxies is 11+/-4% lower than the velocity dispersion of our total member population. We find good agreement with simulations regarding the shape of the relationship between the measured velocity dispersion and the fraction of passive versus star-forming galaxies used to measure it, but we find a small offset between this relationship as measured in data and simulations, which suggests that our dispersions are systematically low by as much as 3% relative to simulations. We argue that this offset could be interpreted as a measurement of the effective velocity bias that describes the ratio of our observed velocity dispersions and the intrinsic velocity dispersion of dark matter particles in a published simulation result. Measuring velocity bias in this way suggests that large spectroscopic surveys can improve dispersion-based mass-observable scaling relations for cosmology even in the face of velocity biases, by quantifying and ultimately calibrating them out.2017ApJ...837...88Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/837/88CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/227/3 : Full spectroscopic data release of SPT-GMOS (Bayliss+, 2016)J/A+A/579/A4 : MCS J1206.2-0847 galaxies spectral classif. (Girardi+, 2015)J/ApJS/216/27 : Galaxy clusters discovered in the SPT-SZ survey (Bleem+, 2015)J/ApJ/792/45 : SPT-SZ survey galaxy clusters optical spectrosc. (Ruel+, 2014)J/ApJ/772/25 : Massive SZE clusters observations with ACT (Sifon+, 2013)J/ApJ/767/15 : Hectospec Cluster Survey (HeCS) (Rines+, 2013)J/ApJ/763/127 : Galaxy clusters discovered in the SPT survey (Reichardt+, 2013)J/ApJ/761/22 : NIR galaxy cluster candidates in the SPT survey (Song+, 2012)J/ApJS/193/8 : Spectroscopy of 26 lensing cluster cores (Bayliss+, 2011)J/ApJ/728/27 : Chandra and AAOmega observations of Abell 2744 (Owers+, 2011)J/A+A/421/59 : Equivalent widths of VMF73 and VMF74 galaxies (Gerken+, 2004)J/AJ/126/2152 : Cluster And Infall Region Nearby Survey. I (Rines+, 2003)J/ApJS/122/51 : Spectroscopic data of 10 rich galaxy clusters (Dressler+ 1999)J/ApJ/471/694 : Abell 2390 Gunn photometry & equivalent widths (Abraham+ 1996)J/A+A/310/8 : The ESO Nearby Abell Cluster Survey I. (Katgert+, 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/837/88https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/837/88http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/837/88https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/837/88https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/837/88http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/837/88GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/837/88/table2 (SZ-selected spectroscopic cluster sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/837/88/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/837/88/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/837/88/table2?GETtext/xml+votable180.050000true0.25-57.8090.005555555555555556Cone search capability for table J/ApJ/837/88/table1 (Catalog data for individual galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/837/88/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/837/88/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/837/88/table1?GETtext/xml+votable180.050000true0.27598-57.7602310.0055555555555555566/33273 33274 33400 33543 33553 33580 33586 33619 33622 33649 33668 33692 33711 33713 33718 33725 33741 33758 33764 33769 33783 33796 33810 33861 33863 33865 33891 33894 33897 33900 33905 33912 33945 33956 33990 34049 34052 34139 34304 34324 34326 34350 34355 34368 34821 34839 34927 34935 34954 35001 35003 35032 35108 35121 35342 35364 35388 35396 39010 39016 39069 39428 45424 45435 45526 45536 45539 45692 45886 45893 45894 45946 45947 45964 46001 46005 46017 46045 46048 46067 46108 46169 46235 46312 46345 46353 46368 46388 46424 46444 46491 46494 46628 46636 46660 474342.381800341673347e-19 3.5010283109654867e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/837/88?format=asciidefaultJ/ApJ/837/88/table2SZ-selected spectroscopic cluster samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClCluster name, SPT/ACT-CLJHHMM+DDMM (G1)meta.id;meta.maincharprimaryf_Cl[b] b: discovered independently by ACT, Hasselfield+ (2013ApJS..209...17H)meta.codecharNsp[11/405] Total number of galaxy spectra with redshift measurementsmeta.numberintNmm[4/169] Number of cluster member galaxiesmeta.numberintNgNumber of galaxies in table 1 for this clustermeta.numberintnullableNpps[4/152] Number of passive and post-starburst membersmeta.numberintNsf[0/39] Number of star-forming membersmeta.numberintz[0.27/1.08] Median cluster redshiftsrc.redshiftfloate_z[0.0003/0.005] Uncertainty in zstat.error;src.redshiftfloatsigma[591/1916] Velocity dispersion estimatephys.veloc.dispersioninte_sigma[56/953] Uncertainty in sigmastat.errorintRefReference(s) for the published galaxy spectroscopy used (1)meta.ref;pos.framecharSZCatDisplay data from Bayliss+, 2016, J/ApJS/227/3; Ruel+, 2014, J/ApJ/792/45; Reichardt+, 2013, J/ApJ/763/127 and Bleem+, 2015, J/ApJS/216/27 within 2.5' if anymeta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/ApJ/837/88/table1Catalog data for individual galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClCluster name, SPT/ACT-CLJHHMM+DDMM (G1)meta.id.parentcharGalGalaxy name, (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharRAJ2000Galaxy Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Galaxy Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainzsp[/4.3] Measured galaxy spectroscopic redshiftsrc.redshiftdoublee_zsp[0/0.003] Uncertainty in zspstat.errordoubleEWO2[-326/66]? Equivalent width of [OII]3727 line, in Angstroms units0.1nmspect.line.eqWidthfloatnullablee_EWO2[0/449]? Uncertainty in EWO20.1nmstat.errorfloatnullableEWHd[-117/133]? Equivalent width of H{delta} line, in Angstroms units0.1nmspect.line.eqWidthfloatnullablee_EWHd[0/203]? Uncertainty in EWHd0.1nmstat.errorfloatnullablermag[16.9/25.3]? r band AB magnitude in SDSS systemmagphot.mag;em.opt.Rfloatnullableimag[16.4/24]? i band AB magnitude in SDSS systemmagphot.mag;em.opt.IfloatnullableR14Display data from Ruel+, 2014, J/ApJ/792/45 within 1" if anymeta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar