J/A+A/342/1ivo://CDS.VizieR/J/A+A/342/1doi:10.26093/cds/vizier.33420001CDSRamella M.Zamorani G.Zucca E.Stirpe G.M.Vettolani G.,Balkowski C.Blanchard A.Cappi A.Cayatte V.Chincarini G.,Collins C.Guzzo L.MacGillivray H.Maccagni D.Maurogordato S.,Merighi R.Mignoli M.Pisani A.Proust D.Scaramella R.2013-03-06T06:20:07Z1999-02-23T11:48:10ZCDS support team

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

cds-question@unistra.frgalaxy-clustersradial-velocitygalaxy-kinematicsIn Table 1 we present our group catalog. For each group we list the ID number (column 1), the number of members (column 2), the coordinates {alpha}_(1950)_ and {delta}_(1950)_ (columns 3 and 4 respectively), the mean radial velocity cz in km/s corrected for Virgo infall and galactic rotation (column 5), and the velocity dispersion {sigma}_cz_ (column 6). We compute the velocity dispersion following the prescription of Ledermann (1984) for an unbiased estimator of the dispersion (see previous section). We also take into account the cosmological expansion of the universe and the measurement errors according to the prescriptions of Danese et al. (1980A&A....82..322D). The errors we associate to the redshifts are those output by the RVSAO cross-correlation procedure multiplied by a factor 1.6. This factor brings the cross-correlation error in rough agreement with the external error estimated from repeated observations (Vettolani et al., 1998, Cat. <J/A+AS/130/323> -- here we do not distinguish between emission and absorption line redshifts).1999A&A...342....1Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/342/1CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/130/323 : ESO Slice Project (Vettolani+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/342/1https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/342/1http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/342/1https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/342/1https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/342/1http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/342/1GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/342/1/table1 (ESP groups)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/342/1/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/342/1/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/342/1/table1?GETtext/xml+votable180.050000true338.37944-40.271510.0055555555555555565/11627 6/16385-16388 16392 35421-35423 35437-35439 35441-35444 35448 35485-35487 35499 35501-35503 35505-35508 35512 35521-35524 35528 46429-46430 46444-46445 46447 46449-46451 46456 46507 46513-46515 46520 46849 46852https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/342/1?format=asciiOpticaldefaultJ/A+A/342/1/table1ESP groupsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGroupsGroups identification numbermeta.id;meta.mainintNmemNumber of membersmeta.numberintRA1950Right ascension (1950)pos.eq.ra;meta.mainDE1950Declination (1950)pos.eq.dec;meta.mainczMean radial velocitykm/sspect.dopplerVeloc;stat.meanintl_sigmalimit flag on sigma (1)meta.code.errorcharsigmaVelocity dispersionkm/sphys.veloc.dispersionintNoczRatio of galaxies that have not a measured redshift to the number of members (2)meta.number;src.redshiftfloat_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexed