J/ApJ/625/6ivo://CDS.VizieR/J/ApJ/625/6doi:10.26093/cds/vizier.16250006CDSGerke B.F.Newman J.A.Davis M.Marinoni C.Yan R.Coil A.L.,Conroy C.Cooper M.C.Faber S.M.Finkbeiner D.P.Guhathakurta P.,Kaiser N.Koo D.C.Phillips A.C.Weiner B.J.Willmer C.N.A.2014-03-25T13:36:28Z2007-12-28T12:15:40ZCDS support team

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

cds-question@unistra.frgalaxy-clustersredshiftedgalaxy-kinematicsWe use the first 25% of the DEEP2 Galaxy Redshift Survey spectroscopic data to identify groups and clusters of galaxies in redshift space. The data set contains 8370 galaxies with confirmed redshifts in the range 0.7<=z<=1.4, over 1{deg}^2^ on the sky. Groups are identified using an algorithm (the Voronoi-Delaunay method) that has been shown to accurately reproduce the statistics of groups in simulated DEEP2-like samples. We optimize this algorithm for the DEEP2 survey by applying it to realistic mock galaxy catalogs and assessing the results using a stringent set of criteria for measuring group-finding success, which we develop and describe in detail here. We present the first DEEP2 group catalog, which assigns 32% of the galaxies to 899 distinct groups with two or more members, 153 of which have velocity dispersions above 350km/s. We provide locations, redshifts and properties for this high-dispersion subsample. This catalog represents the largest sample to date of spectroscopically detected groups at z~1.2005ApJ...625....6Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/625/6CatalogResearchIsServedByTAP VizieR generic serviceIsPreviousVersionOfJ/ApJ/751/50IsServedByConesearch servicerelated-toJ/ApJS/142/1 : DEEP Groth Strip Survey. II. (Simard+, 2002)J/ApJ/599/1006 : DEEP Groth Strip Survey. VII. (Kobulnicky+, 2003)J/ApJS/157/175 : DEEP Groth Strip Survey. VIII. (Koo+, 2005)J/ApJ/571/136 : DEEP Groth Strip survey. X. (Im+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/625/6https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/625/6http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/625/6https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/625/6https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/625/6http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/625/6GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/625/6/table3 (Locations and properties of groups with {sigma}>=350km/s)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/625/6/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/625/6/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/625/6/table3?GETtext/xml+votable180.050000true252.812534.88750.0055555555555555566/9342 9343 9429 17766 17767 17772 17773 18790 18791https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/625/6?format=asciiOpticaldefaultJ/ApJ/625/6/table3Locations and properties of groups with {sigma}>=350km/srecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Hour of Right Ascension (J2000) (2) (1)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (2) (1)pos.eq.dec;meta.mainzRedshift (2)src.redshiftfloatsigmaVelocity dispersionkm/sphys.veloc.dispersionintNGalNumber of galaxiesmeta.numberintSDet[Y] Strong detection (3)meta.codechar