J/MNRAS/443/2679ivo://CDS.VizieR/J/MNRAS/443/2679doi:10.26093/cds/vizier.74432679CDSBalogh M.L.Mcgee S.L.Mok A.Wilman D.J.Finoguenov A.Bower R.G.,Mulchaey J.S.Parker L.C.Tanaka M.2024-08-10T20:18:17Z2015-07-28T14:46:54ZCDS support team

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

cds-question@unistra.frgalaxy-clustersredshiftedline-intensitiesgalaxy-kinematicsWe present the data release of the Gemini-South GMOS spectroscopy in the fields of 11 galaxy groups at 0.8<z<1, within the COSMOS field. This forms the basis of the Galaxy Environment Evolution Collaboration 2 (GEEC2) project to study galaxy evolution in haloes with M~10^13^M_{sun}_ across cosmic time. The final sample includes 162 spectroscopically confirmed members with R<24.75, and is >50% complete for galaxies within the virial radius, and with stellar mass M_star_>10^10.3^M_{sun}_. Including galaxies with photometric redshifts, we have an effective sample size of ~400 galaxies within the virial radii of these groups. We present group velocity dispersions, dynamical and stellar masses. Combining with the GCLASS sample of more massive clusters at the same redshift, we find the total stellar mass is strongly correlated with the dynamical mass, with logM_200_=1.20(logM_star_-12)+14.07. This stellar fraction of ~1% is lower than predicted by some halo occupation distribution models, though the weak dependence on halo mass is in good agreement. Most groups have an easily identifiable most massive galaxy (MMG) near the centre of the galaxy distribution, and we present the spectroscopic properties and surface brightness fits to these galaxies. The total stellar mass distribution in the groups, excluding the MMG, compares well with an NFW (Navarro Frenk & White) profile with concentration 4, for galaxies beyond ~0.2R_200_. This is more concentrated than the number density distribution, demonstrating that there is some mass segregation.2014MNRAS.443.2679Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/443/2679CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/172/70 : zCOSMOS-bright catalog (Lilly+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/443/2679https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/443/2679http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/443/2679https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/443/2679https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/443/2679http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/443/2679GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/443/2679/table1 (Catalogue of spectroscopic redshifts)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/443/2679/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/443/2679/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/443/2679/table1?GETtext/xml+votable180.050000true150.395221.890730.005555555555555556Cone search capability for table J/MNRAS/443/2679/groups (Properties of the 11 GEEC2 galaxy groups published in Paper 2 (Mok et al., 2013MNRAS.431.1090M) (table 2), with new positions and derived physical properties (table 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/443/2679/groups?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/443/2679/groups?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/443/2679/groups?GETtext/xml+votable180.050000true150.4141.8480.0055555555555555565/6814 6/27245 27247 27344https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/443/2679?format=asciiOpticaldefaultJ/MNRAS/443/2679/table1Catalogue of spectroscopic redshiftsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalGalaxy identification numbermeta.id;meta.mainintn_GalSimbad column added by the CDSmeta.ref.urlintnullableRAJ2000? Right ascension (J2000)degpos.eq.ra;meta.mainnullableDEJ2000? Declination (J2000)degpos.eq.dec;meta.mainnullablez[-0.0006/4.2] Redshiftsrc.redshiftfloatq_z[-2/29.5] Redshift quality, 4=secure (1)meta.code.qual;src.redshiftfloatlogM*? Stellar mass (Chabrier IMF)log(solMass)phys.massfloatnullableE_logM*? Upper uncertainty on stellar masslog(solMass)stat.error;stat.maxfloatnullablee_logM*? Lower uncertainty on stellar masslog(solMass)stat.errorfloatnullableEW[OII]? [OII] equivalent width (rest frame)0.1nmspect.line.eqWidthfloatnullablee_EW[OII]? Uncertainty on EW[OII]0.1nmstat.error;spect.line.eqWidthdoublenullableClassClassification: sf=star-forming, p=passive, int=intermediatemeta.code.classcharSourceSource (GEEC2 or zCOSMOS)meta.bibcharzCSimbad column added by the CDSmeta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/443/2679/groupsProperties of the 11 GEEC2 galaxy groups published in Paper 2 (Mok et al., 2013MNRAS.431.1090M) (table 2), with new positions and derived physical properties (table 3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGroup[40/213] Group ID numbermeta.id;meta.mainintm_Group[a] Multiplicity index on Groupmeta.code.multipcharRAJ2000Mean right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Mean declination (J2000)degpos.eq.dec;meta.mainz[0.8/0.98] Median redshiftsrc.redshiftfloatNmask[2/4] Number of masks observed in each fieldmeta.numberintNgNumber of member galaxies in table4meta.numberintnullableNmem[5/34] Number of group membersmeta.numberintsigmaRest-frame velocity dispersion {sigma} as measured, without correction for any biaskm/sphys.veloc.dispersioninte_sigmarms uncertainty on sigmakm/sstat.errorintRA1degAlternative center right ascension (J2000)degpos.eq.raDE1degAlternative center declination (J2000)degpos.eq.decsigmaiIntrinsic velocity dispersion estimate (1)km/sphys.veloc.dispersioninte_sigmairms uncertainty on sigmaikm/sstat.errorintRrmsRadius (rms offset from group mean position)Mpcphys.size.radiusfloate_Rrmsrms uncertainty on RrmsMpcstat.errorfloatMrmsMass within Rrms radius1e+13solMassphys.massfloate_Mrmsrms uncertainty on Mrms1e+13solMassstat.errorfloatM*rmsStellar mass within Rrms radius (r<Rrms)1e+11solMassphys.massfloatE_M*rmsUpper uncertainty on M*rms1e+11solMassstat.error;stat.maxfloate_M*rmsUpper uncertainty on M*rms1e+11solMassstat.error;instr.det.noisefloatR200Radius R_200_ (200 critical Universe density)Mpcphys.size.radiusfloate_R200rms uncertainty on R200Mpcstat.errorfloatM200Mass within R200 radius1e+13solMassphys.massfloate_M200rms uncertainty on M2001e+13solMassstat.errorfloatM*200Stellar mass within R200 radius (r<R200)1e+11solMassphys.massfloatE_M*200Upper uncertainty on M*2001e+11solMassstat.error;stat.maxfloate_M*200Lower uncertainty on M*2001e+11solMassstat.errorfloatM200X? Equivalent mass as estimated from the X-ray luminosity (2)1e+13solMassphys.massfloatnullablee_M200X? rms uncertainty on M200X1e+13solMassstat.errorfloatnullableJ/MNRAS/443/2679/table4Catalogue of group membersGroup[40/213] Group ID numbermeta.id.parentintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintm_Group[a] Multiplicity index on Groupmeta.code.multipcharGalGalaxy ID numbermeta.id;meta.mainintn_GalSimbad column added by the CDSmeta.ref.urlintnullablezsp[0.82/0.98]? Spectroscopic redshiftsrc.redshiftfloatnullablezph[0.4/2.3] Photometric redshiftsrc.redshiftfloatE_zphUpper uncertainty on photo-zstat.error;stat.maxfloate_zphLower uncertainty on photo-zstat.errorfloatPmb[0/1] Photo-z probability of being a group membermeta.id.parent;stat.probability;pos.lgfloatDist[0/2.5] Distance from group centre (mass-weighted mean of passive population)Mpcpos.distancefloat