J/MNRAS/452/3304ivo://CDS.VizieR/J/MNRAS/452/3304doi:10.26093/cds/vizier.74523304CDSProust D.Yegorova I.Saviane I.Ivanov V.D.Bresolin F.Salzer J.J.,Capelato H.V.2024-08-15T20:14:26Z2016-04-01T16:16:24ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesphotometryredshiftedWe present a dynamical analysis of the galaxy cluster AC114 based on a catalogue of 524 velocities. Of these, 169 (32 percent) are newly obtained at European Southern Observatory (Chile) with the Very Large Telescope and the VIsible MultiObject spectrograph. Data on individual galaxies are presented and the accuracy of the measured velocities is discussed. Dynamical properties of the cluster are derived. We obtain an improved mean redshift value z=0.31665+/-0.0008 and velocity dispersion {sigma}=1893^+73^_-82_km/s. A large velocity dispersion within the core radius and the shape of the infall pattern suggests that this part of the cluster is in a radial phase of relaxation with a very elongated radial filament spanning 12000km/s. A radial foreground structure is detected within the central 0.5h^-1^Mpc radius, recognizable as a redshift group at the same central redshift value. We analyse the colour distribution for this archetype Butcher-Oemler galaxy cluster and identify the separate red and blue galaxy sequences. The latter subset contains 44 percent of confirmed members of the cluster, reaching magnitudes as faint as R_f_=21.1 (1.0mag fainter than previous studies). We derive a mass M_200_=(4.3+/-0.7)x10^15^M_{sun}_h^-1^. In a subsequent paper, we will utilize the spectral data presented here to explore the mass-metallicity relation for this intermediate redshift cluster.2015MNRAS.452.3304Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/452/3304CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/452/3304https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/452/3304http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/452/3304https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/452/3304https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/452/3304http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/452/3304GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/452/3304/table2 (Positions, photometric data and velocities for galaxies of AC114)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/452/3304/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/452/3304/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/452/3304/table2?GETtext/xml+votable180.050000true344.83625-34.70683330.0055555555555555566/46571 46574https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/452/3304?format=asciiOpticaldefaultJ/MNRAS/452/3304/table2Positions, photometric data and velocities for galaxies of AC114recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQ[1/4] Quadrant numbermeta.id;meta.mainintIDGalaxy ID within the quadrantmeta.idintn_ID[ab] Multiplicity index on IDmeta.notecharRAJ2000right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainBjmag? SUPERCOSMOS Bj magnitudemagphot.mag;em.opt.BfloatnullableRfmag? SUPERCOSMOS Rf magnitudemagphot.mag;em.opt.RfloatnullableRcomp? Computed R magnitudemagphot.mag;em.opt.RfloatnullablezRedshiftsrc.redshiftdoubleu_z[?] Uncertainty flag on zmeta.code.error;src.redshiftchare_z? rms uncertainty on zstat.error;src.redshiftdoublenullableR? Correlation peak height to the amplitude of the antisymmetric noisestat.fit.paramfloatnullableNotesNotesmeta.noteSimbadSimbad column added by the CDSmeta.ref.urlchar