J/AJ/123/2261ivo://CDS.VizieR/J/AJ/123/2261doi:10.26093/cds/vizier.51232261CDSBerrington R.C.Lugger P.M.Cohn H.N.2023-04-06T16:50:47Z2003-04-27T07:08:59ZCDS support team

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

cds-question@unistra.frgalaxy-clustersradial-velocityWe present 236 new radial velocities of galaxies in the cluster A2256 measured with the WIYN Hydra Multi-Object Spectrograph. Combined with the previous work of Fabricant, Kent, & Kurtz (1989ApJ...336...77F), we have velocities for a total of 319 galaxies, of which 277 are cluster members. In addition to the new radial velocities, we present a 3x3 image mosaic in the R band of the central 19'x19' region of A2256, from which we obtained photometry for 861 galaxies. These data provide strong evidence for a merger event between two groups. In addition, we present evidence for the presence of a third group, on the outer reaches of the system, that is just now beginning to merge with the system.2002AJ....123.2261Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/123/2261CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/534/114 : RASSCALS: X-ray and optical study (Mahdavi+, 2000)J/ApJS/129/435 : NORAS galaxy cluster survey. I. (Bohringer+, 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/123/2261https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/123/2261http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/123/2261https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/123/2261https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/123/2261http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/123/2261GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/123/2261/table3 (Galaxy Catalog for A2256)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/123/2261/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/123/2261/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/123/2261/table3?GETtext/xml+votable180.050000true253.52416778.6285560.005555555555555556Cone search capability for table J/AJ/123/2261/table10 (Radio source positions in A2256)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/123/2261/table10?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/123/2261/table10?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/123/2261/table10?GETtext/xml+votable180.050000true255.8712578.6315830.0055555555555555566/12121 12123-12124 12126https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/123/2261?format=asciiOpticaldefaultJ/AJ/123/2261/table3Galaxy Catalog for A2256recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[BLC2002]Galaxy identification numbermeta.id;meta.mainintprimaryRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainRcmag? The Kron-Cousins R band magnitude as reported by Faint-Object Classification Analysis Systemmagphot.mag;em.opt.Rfloatnullablee_Rcmag? The 1{sigma} error in Rmagmagstat.errorfloatnullablermag? The Fabricant et al. (1989ApJ...336...77F) r band isophotal magnitudemagphot.mag;em.opt.RfloatnullableczThe radial velocity (1)km/sphys.veloc;pos.heliocentricdoublee_czThe 1{sigma} error in czkm/sstat.errorfloat[FKK89]? Fabricant et al. (1989ApJ...336...77F) identification numbermeta.idintnullableJ/AJ/123/2261/table10Radio source positions in A2256recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCompRadio Component, from Roettiger et al. 1993ApJ...407L..53R and Bridle et al. 1979A&A....80..201Bmeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.main[BLC2002]? Galaxy optical counterpart numbermeta.id.associntnullableGroup? Group membership of the optical counterpart if one is knownmeta.idintnullableRV? Radial velocity of the galaxykm/sphys.veloc;pos.heliocentricfloatnullable