J/AJ/119/727ivo://CDS.VizieR/J/AJ/119/727doi:10.26093/cds/vizier.51190727CDSBarmby P.Huchra J.P.Brodie J.P.Forbes D.A.Schroder L.L.,Grillmair C.J.2023-04-06T16:50:38Z2002-05-07T13:20:04ZCDS support team

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

cds-question@unistra.frglobular-star-clustersinfrared-photometryvisible-astronomybroad-band-photometryradial-velocitymetallicityWe present a new catalog of photometric and spectroscopic data on M31 globular clusters (GCs). The catalog includes new optical and near-infrared photometry for a substantial fraction of the 435 clusters and cluster candidates. We use these data to determine the reddening and intrinsic colors of individual clusters, and we find that the extinction laws in the Galaxy and M31 are not significantly different. There are significant (up to 0.2 mag in V-K) offsets between the clusters' intrinsic colors and simple stellar population colors predicted by population synthesis models; we suggest that these are due to systematic errors in the models. The distributions of M31 clusters' metallicities and metallicity-sensitive colors are bimodal, with peaks at [Fe/H]~-1.4 and -0.6. The distribution of V-I is often bimodal in elliptical galaxies' globular cluster systems, but it is not sensitive enough to metallicity to show bimodality in M31 and Galactic cluster systems. The radial distribution and kinematics of the two M31 metallicity groups imply that they are analogs of the Galactic "halo" and "disk/bulge" cluster systems. The globular clusters in M31 have a small radial metallicity gradient, suggesting that some dissipation occurred during the formation of the globular cluster system. The lack of correlation between cluster luminosity and metallicity in M31 GCs shows that self-enrichment is not important in GC formation.2000AJ....119..727Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/119/727CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/116/447 : M31 globulars clusters ellipticities (Staneva+, 1996)J/AJ/114/1488 : Globulars in M31 (Holland+ 1997)J/AcA/48/455 : Globular Clusters in M31 and M33 (Mochejska+, 1998)J/AJ/122/2458 : M31 globular clusters from HST (Barmby+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/119/727https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/119/727http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/119/727https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/119/727https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/119/727http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/119/727GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/119/727/table1Catalog of photometric data for M31 globular clustersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName (G1)meta.id;meta.maincharprimaryl_VmagLimit flag on Vmagmeta.code.errorcharVmag? V magnitudemagphot.mag;em.opt.VfloatnullableB-V? B-V colour indexmagphot.color;em.opt.B;em.opt.VfloatnullableU-B? U-B colour magnitudemagphot.color;em.opt.U;em.opt.BfloatnullableV-R? V-R colour magnitudemagphot.color;em.opt.V;em.opt.RfloatnullableV-I? V-I colour magnitudemagphot.color;em.opt.V;em.opt.IfloatnullableJmag? J magnitudemagphot.mag;em.IR.JfloatnullableHmag? H magnitudemagphot.mag;em.IR.HfloatnullableKmag? K magnitudemagphot.mag;em.IR.Kfloatnullabler_magOptical source (1)meta.refcharr_I-RI-R source (1)meta.refcharComComments (1)meta.notecharJ/AJ/119/727/table2M31 cluster candidates shown not to be clustersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName (G1)meta.id;meta.maincharprimaryClassClassificationsrc.classcharr_ClassReferences in table refs.datmeta.refcharJ/AJ/119/727/refsReferences to table1 and table2recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.refcharBibCodeBibcodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharJ/AJ/119/727/table3New photometric data for M31 globular clustersComComments (1)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName (G1)meta.id;meta.maincharVmag? V magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullableB-V? B-V colour indexmagphot.color;em.opt.B;em.opt.Vfloatnullablee_B-V? rms uncertainty on B-Vmagstat.errorfloatnullableU-B? U-B colour indexmagphot.color;em.opt.U;em.opt.Bfloatnullablee_U-B? rms uncertainty on U-Bmagstat.errorfloatnullableV-R? V-R colour indexmagphot.color;em.opt.V;em.opt.Rfloatnullablee_V-R? rms uncertainty on V-Rmagstat.errorfloatnullableV-I? V-I colour indexmagphot.color;em.opt.V;em.opt.Ifloatnullablee_V-I? rms uncertainty on V-Imagstat.errorfloatnullableJmag? J magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? rms uncertainty on Jmagmagstat.errorfloatnullableKmag? K magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? rms uncertainty on Kmagmagstat.errorfloatnullableJ/AJ/119/727/table5New spectroscopic data for M31 globular clustersNameName (G1)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintcluster[cn] c: cluster, n: non-clustersrc.classcharRVRadial velocitykm/sphys.veloc;pos.heliocentricinte_RVrms uncertainty on RVkm/sstat.errorint[Fe/H]? MetallicitySunphys.abund.Fefloatnullablee_[Fe/H]? rms uncertainty on [Fe/H]Sunstat.errorfloatnullableComCommentsmeta.notechar