J/A+A/430/19ivo://CDS.VizieR/J/A+A/430/19doi:10.26093/cds/vizier.34300019CDSFerrari C.Benoist C.Maurogordato S.Cappi A.Slezak E.2006-12-17T13:21:34Z2006-12-17T14:21:08ZCDS support team

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

cds-question@unistra.frgalaxy-clustersredshiftedinfrared-photometryvisible-astronomyphotometryline-intensitiesWe present the analysis and results of a new VRI photometric and spectroscopic survey of the central ~1.8x1.2Mpc^2^ region of the galaxy cluster A3921 (z=0.094). We detect the presence of two dominant clumps of galaxies with a mass ratio of ~5: a main cluster centred on the Brightest Cluster Galaxy (BCG) (A3921-A), and an NW sub-cluster (A3921-B) hosting the second brightest cluster galaxy. The distorted morphology of the two sub-clusters suggests that they are interacting, while the velocity distribution of 104 confirmed cluster members does not reveal strong signatures of merging.2005A&A...430...19Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/430/19CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/430/19https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/430/19http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/430/19https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/430/19https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/430/19http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/430/19GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/430/19/tablea (Radial velocities and spectral lines for 239 galaxies in A3921)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/430/19/tablea?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/430/19/tablea?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/430/19/tablea?GETtext/xml+votable180.050000true342.5806667-64.430750.0055555555555555566/45421 45432https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/430/19?format=asciiOpticalInfrareddefaultJ/A+A/430/19/tableaRadial velocities and spectral lines for 239 galaxies in A3921RunYear of observationtime.epochintq_czQuality flag for redshift determination (2)meta.code.qualintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqIdentification numbermeta.id;meta.mainintRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainVmagABV-band magnitude (AB system)phot.mag;em.opt.VfloatRmagABR-band magnitude (AB system)phot.mag;em.opt.RfloatImagABI-band magnitude (AB system)phot.mag;em.opt.Ifloatcz? Radial velocitykm/sspect.dopplerVelocdoublenullablee_cz? Error on radial velocitykm/sstat.errorfloatnullablen_cz[*f] Note when no redshift value (1)meta.notecharEW([OII])Equivalent width [OII] (3)0.1nmspect.line.eqWidthfloatEW(Hdelta)Equivalent width Hdelta (3)0.1nmspect.line.eqWidth;em.line.HdeltafloatMTypeType of galaxy (4)meta.notechar