VII/175ivo://CDS.VizieR/VII/175CDSLumsden S.L.Nichol R.C.Collins C.A.Guzzo L.1997-12-09T22:08:40Z1997-12-09T23:08:36ZCDS support team

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

cds-question@unistra.frgalaxy-clustersWe present the Edinburgh-Durham Cluster Catalogue (EDCC). This is the first machine-based, objectively selected sample of clusters of galaxies. It consists of 737 clusters or groups of all richnesses, over 0.5 sr of sky, centred on the South Galactic Pole (SGP). The primary galaAy data set for the cluster survey is the Edinburgh-Durham Southern Galaxy Catalogue (EDSGC). The EDCC was constructed using an automatic peak-finding algorithm and is complete to m_10_(b_j_) = 18.75. In a comparison with the Abell clusters in the same region, we detect 80 per cent of their rich clusters nominally brighter than our completion limit in addition to many new systems. This suggests that the EDCC is 90 per cent complete for Abell-type clusters. We also conclude that the Abell magnitude system is biased towards bright magnitudes for most of their clusters, and that their richness estimates are prone to a larger uncertainty than they suggest. The EDCC therefore supersedes the Abell catalogue as a data base for statistical studies of cluster properties.1992MNRAS.258....1Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/VII/175CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/274/1071 : Edinburgh-Milano cluster redshift survey (Collins+ 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=VII/175https://vizier.iucaa.in/viz-bin/VizieR-2?-source=VII/175http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=VII/175https://vizier.cds.unistra.fr/viz-bin/votable?-source=VII/175https://vizier.iucaa.in/viz-bin/votable?-source=VII/175http://vizieridia.saao.ac.za/viz-bin/votable?-source=VII/175GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table VII/175/table3 (the Edinburgh-Durham cluster catalogue)https://vizier.cds.unistra.fr/viz-bin/conesearch/VII/175/table3?https://vizier.iucaa.in/viz-bin/conesearch/VII/175/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/VII/175/table3?GETtext/xml+votable180.050000true322.408753-22.274590.005555555555555556https://cdsarc.cds.unistra.fr/viz-bin/moc/VII/175?format=asciiOpticaldefaultVII/175/table3the Edinburgh-Durham cluster cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEDCC[1,769]+ sequential EDCC cluster identification numbermeta.id;meta.mainintprimaryindexedu_EDCC[?] uncertainty flag on EDCC, indicating that such clusters could not be distinguished from the surrounding field (see paper, p6R)meta.code.errorcharRAB1950right ascension (hours) (B1950)pos.eq.ra;meta.mainDEB1950[-]! declination signpos.eq.dec;meta.mainnullableM1magnitude of first brightest membermagphot.magfloatM3magnitude of third brightest membermagphot.magfloatM10magnitude of tenth brightest membermagphot.magfloatu_M10[*] uncertainty flag of M10 where the visual inspection gave a clearly different result (see paper, p6R)meta.code.errorcharNclus[0,] number of galaxies within the Abell radius between M3 and M3+2 "after" the background galaxies have been removedctmeta.numberintu_Nclus[*] uncertainty flag of Nclus (see u_M10)meta.code.errorcharNback[0,] number of background galaxies within the same radius to the same magnitude limit (see Nclus, and paper p6R)ctmeta.numberintTHA[0,] Abell radiusdegphys.angSize;srcfloatF[F]! character 'F' for field numbermeta.notecharFIELD[0,] Schmidt J survey field numberobs.fieldintRUN1number of times the cluster was located in run 1 (see paper p2)ctmeta.numberintRUN2the above in run 2ctmeta.numberintRUN3the above in run 3ctmeta.numberintDEB[d] 'd'= the cluster was deblended, ' '= notmeta.notecharACO[0-9S ] Abell identification number (see paper p6R) (1)meta.idcharu_ACO[:] only the clusters' Abell radii overlap (1)meta.code.errorchar