J/PASP/119/7ivo://CDS.VizieR/J/PASP/119/7doi:10.26093/cds/vizier.61190007CDSKrienke O.K.Hodge P.W.2025-09-09T14:13:18Z2008-04-20T16:17:45ZCDS support team

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

cds-question@unistra.frgalaxiesstellar-associationsphotometryAs a followup to the automated cluster search carried out by Williams & Hodge (2001ApJ...548..190W), we have examined 39 Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) pointings to locate and study a comprehensive collection of disk clusters. The Williams technique was effective in finding young clusters, but not intermediate-age or old clusters. Our searches have shown that M31 has large numbers of these intermediate and older open clusters, most of them undetected by both the Williams survey and other ground-based searches. We present a catalog of 343 clusters detected on the WFPC2 images. Extrapolation from our data indicates that the entire disk of M31 contains approximately 80000 star clusters. We have carried out integrated multicolor photometry of these clusters to ascertain their properties and to compare their properties with cluster systems of other galaxies. We show the cluster luminosity function, the color-magnitude diagram, the formation function, and the size distribution. Cluster densities and colors show trends with disk position. An age distribution is derived and, although the ages are very uncertain for the fainter clusters, there is evidence for cluster dynamical destruction at about the same rate as in our Galaxy.2007PASP..119....7Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/PASP/119/7CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AcA/48/455 : Globular Clusters in M31 and M33 (Mochejska+, 1998)J/AJ/119/727 : M31 globular clusters photometry (Barmby+, 2000)J/AJ/123/2490 : RV and [Fe/H] of M31 globular cluster system (Perrett+, 2002)J/AJ/122/2458 : M31 globular clusters from HST (Barmby+, 2001)J/ApJ/559/851 : Young star cluster candidates in M31 (Williams+, 2001)J/A+A/449/143 : Photometry of M31 globular cluster candidates (Ma+, 2006)J/A+A/456/985 : Radial velocities of 76 M31 candidate clusters (Galleti+, 2006)J/PASP/120/1 : HST WFPC2 star clusters in M31. II. (Krienke, 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/PASP/119/7https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/PASP/119/7http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/PASP/119/7https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/PASP/119/7https://vizier.iucaa.in/viz-bin/votable?-source=J/PASP/119/7http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/PASP/119/7GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/PASP/119/7/table2 (Star clusters detected in M31 WFPC2 HST pointings)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/PASP/119/7/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/PASP/119/7/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/PASP/119/7/table2?GETtext/xml+votable180.050000true9.08312540.89138890.0055555555555555566/2622-2623 2666 2705 2708-2709 27523.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/PASP/119/7?format=asciiOpticaldefaultJ/PASP/119/7/table2Star clusters detected in M31 WFPC2 HST pointingsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_Name[AB] previously (A) or this study (B) identified clustermeta.notecharNameCluster name (1)meta.id;meta.maincharKHM31[1/283]? KHM31 cluster numbermeta.idintnullableRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainVmag? V magnitude (2)magphot.mag;em.opt.Vfloatnullablee_Vmag? rms uncertainty on Vmag (2)magstat.error;phot.mag;em.opt.VfloatnullableB-V? B-V colour index (2)magphot.color;em.opt.B;em.opt.Vfloatnullablee_B-V? rms uncertainty on B-V (2)magstat.error;phot.color;em.opt.BfloatnullableV-I? V-I colour index (2)magphot.color;em.opt.V;em.opt.Ifloatnullablee_V-I? rms uncertainty on V-I (2)magstat.error;phot.color;em.opt.Vfloatnullable