J/A+A/424/79ivo://CDS.VizieR/J/A+A/424/79doi:10.26093/cds/vizier.34240079CDSMercurio A.Busarello G.Merluzzi P.La Barbera F.Girardi M.Haines C.2004-10-17T09:55:36Z2004-10-17T09:54:31ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesphotometryspectroscopyredshiftedWe analyse the properties of galaxy populations in the rich Abell cluster ABCG 209 at redshift z~0.21, on the basis of spectral classification of 102 member galaxies. We take advantage of available structural parameters to study separately the properties of bulge-dominated and disk-dominated galaxies. The star formation histories of the cluster galaxy populations are investigated by using line strengths and the 4000{AA} break, through a comparison to stellar population synthesis models. The dynamical properties of different spectral classes are examined in order to infer the past merging history of ABCG 209. The cluster is characterized by the presence of two components: an old galaxy population, formed very early (z_f>~3.5), and a younger (z_f>~1.2) population of infalling galaxies. We find evidence of a merger with an infalling group of galaxies occurred 3.5-4.5Gyr ago. The correlation between the position of the young H_delta-strong galaxies and the X-ray flux shows that the hot intracluster medium triggered a starburst in this galaxy population ~3Gyr ago.2004A&A...424...79Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/424/79CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/397/431 : Redshifts of ABCG209 galaxies (Mercurio+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/424/79https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/424/79http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/424/79https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/424/79https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/424/79http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/424/79GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/424/79/table1 (Photometric parameters for 102 galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/424/79/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/424/79/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/424/79/table1?GETtext/xml+votable180.050000true22.890875-13.53969440.0055555555555555566/17456-17457https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/424/79?format=asciiOpticaldefaultJ/A+A/424/79/table1Photometric parameters for 102 galaxiesnSersic indexstat.fit.paramfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning numbermeta.id;meta.mainintprimaryRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainRmagR-band Kron magnitude corrected for Galactic extinction (1)magphot.mag;em.opt.Rfloate_Rmagrms uncertainty on the R-band Kron magnitude determination (2)magstat.errorfloatB-RB-R colour indexmagphot.color;em.opt.B;em.opt.Rfloate_B-Rrms uncertainty on the color determination (2)magstat.errorfloatzheliocentric corrected redshiftsrc.redshiftfloate_zrms uncertainty on the redshiftstat.errorfloatJ/A+A/424/79/table4*Spectral indices for 102 galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning numbermeta.id;meta.mainintD4000? Strength of the 4000{AA} breakspect.indexfloatnullablee_D4000? rms uncertainty on the 4000{AA} break measurementstat.errorfloatnullableEW[OII]? [OII] equivalent width (1)0.1nmspect.line.eqWidthfloatnullablee_EW[OII]? rms uncertainty on OII equivalent width0.1nmstat.errorfloatnullableEWHdAH{delta},A equivalent width0.1nmspect.line.eqWidthfloate_EWHdArms uncertainty on H{delta},A equivalent width0.1nmstat.errorfloatEWHgAH{gamma},A equivalent width0.1nmspect.line.eqWidthfloate_EWHgArms uncertainty on H{gamma},A equivalent width0.1nmstat.errorfloatEWFe4531Fe4531 equivalent width0.1nmspect.line.eqWidthfloate_EWFe4531rms uncertainty on Fe4531 equivalent width0.1nmstat.errorfloatEWHbH{beta} equivalent width0.1nmspect.line.eqWidthfloate_EWHbrms uncertainty on H_beta equivalent width0.1nmstat.errorfloatEW[OIII]Equivalent width of [OIII]0.1nmspect.line.eqWidthfloate_EW[OIII]rms uncertainty on [OIII] equivalent width0.1nmstat.errorfloatEWFe5015Fe5015 equivalent width0.1nmspect.line.eqWidthfloate_EWFe5015rms uncertainty on Fe5015 equivalent width0.1nmstat.errorfloatMg1Mg1 indexmagspect.indexfloate_Mg1rms uncertainty on Mg1 indexmagstat.errorfloatMg2Mg2 indexmagspect.indexfloate_Mg2rms uncertainty on Mg2 indexmagstat.errorfloatMgbMgb index0.1nmspect.indexfloate_Mgbrms uncertainty on Mgb index0.1nmstat.errorfloatEWFe5270H{beta} equivalent width0.1nmspect.line.eqWidthfloate_EWFe5270rms uncertainty on Fe5270 equivalent width0.1nmstat.errorfloatEWFe5335Fe5335 equivalent width0.1nmspect.line.eqWidthfloate_EWFe5335rms uncertainty on Fe5335 equivalent width0.1nmstat.errorfloatEWHa? H{alpha} equivalent width (1)0.1nmspect.line.eqWidthfloatnullablee_EWHa? rms uncertainty on H_alpha equivalent width0.1nmstat.errorfloatnullableClassSpectral classification (2)src.spTypechar