J/AJ/116/2108ivo://CDS.VizieR/J/AJ/116/2108doi:10.26093/cds/vizier.51162108CDSKoranyi D.M.Geller M.J.Mohr J.J.Wegner G.2023-04-06T16:50:30Z1999-04-07T14:42:18ZCDS support team

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

cds-question@unistra.frgalaxy-clustersradial-velocityapparent-magnitudeWe have measured redshifts and Kron-Cousins R-band magnitudes for a sample of galaxies in the poor cluster AWM 7. We have measured redshifts for 172 galaxies; 106 of these are cluster members. We determine the luminosity function (LF) from a photometric survey of the central 1.2x1.2h^-1^Mpc. The LF has a bump at the bright end and a faint-end slope of {alpha}=-1.37+/-0.16, populated almost exclusively by absorption-line galaxies. The cluster velocity dispersion is lower in the core (~530km/s) than at the outskirts (~680km/s), consistent with the cooling flow seen in the X-ray. The cold core extends ~150h^-1^kpc from the cluster center. The Kron-Cousins R-band mass-to-light ratio of the system is 650+/-170hM_{sun}_/L_{sun}_, substantially lower than previous optical determinations, but consistent with most previous X-ray determinations. We adopt H_0_=100hkm/s/Mpc throughout this paper; at the mean cluster redshift (5247+/-76km/s), 1h^-1^Mpc subtends 65.5'.1998AJ....116.2108Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/116/2108CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/109/874 : Kinematics of MKW and AWM Poor Clusters (Beers+ 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/116/2108https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/116/2108http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/116/2108https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/116/2108https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/116/2108http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/116/2108GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/116/2108/table1 (Properties of sample galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/116/2108/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/116/2108/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/116/2108/table1?GETtext/xml+votable180.050000true42.335833340.88806110.0055555555555555565/597 6/1022-1023 2385 2387 2396 3072https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/116/2108?format=asciiOpticaldefaultJ/AJ/116/2108/table1Properties of sample galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainRVRadial velocitykm/sphys.veloc;pos.heliocentricinte_RVrms uncertainty on RVkm/sstat.errorfloatRmagIsophotal magnitude (to 23.5mag/arcsec^2^ in R_KC_)magphot.mag;em.opt.Rfloate_Rmagrms uncertainty on Rmagmagstat.errorfloatr_RmagSource of the magnitude (CCD frame number or P for POSS)meta.refcharEmEmission type (1)src.classcharARExtinction A_R_ along the line of sight to the galaxymagphys.absorptionfloat