J/MNRAS/327/1116ivo://CDS.VizieR/J/MNRAS/327/1116doi:10.26093/cds/vizier.73271116CDSLarsen S.S.Forbes D.A.Brodie J.P.2024-06-27T20:17:34Z2006-04-05T16:05:23ZCDS support team

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

cds-question@unistra.frglobular-star-clustersphotometryWe explore the rich globular cluster (GC) system of the nearby Sa galaxy M104, the "Sombrero" (NGC 4594), using archive Wide Field Planetary Camera 2 data. The GC colour distribution is found to be bimodal at the >99 per cent confidence level, with peaks at (V-I)0=0.96+/-0.03 and 1,21+/-0.03. The inferred metallicities are very similar to those of GCs in our Galaxy and M31. However, the Sombrero reveals a much enhanced number of red (metal-rich) GCs compared to other well-studied spirals. Because the Sombrero is dominated by a huge bulge and only has a modest disc, we associate the two subpopulations with the halo and bulge components, respectively. Thus our analysis supports the view that the metal-rich GCs in spirals are associated with the bulge rather than with the disc. The Sombrero GCs have typical effective (half-light) radii of ~2pc with the red ones being ~30 per cent smaller than the blue ones. We identify many similarities between the GC system of the Sombrero and those of both late-type spirals and early-type galaxies. Thus both the GC system and the Hubble type of the Sombrero galaxy appear to be intermediate in their nature.2001MNRAS.327.1116Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/327/1116CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/13 : Globular-Cluster Catalog (Arp 1965)VII/44 : Star Clusters Associations II. Globular Clusters (Ruprecht+ 1981)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/327/1116https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/327/1116http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/327/1116https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/327/1116https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/327/1116http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/327/1116GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/327/1116/table2 (Data for clusters in the Sombrero)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/327/1116/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/327/1116/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/327/1116/table2?GETtext/xml+votable180.050000true190.0012917-11.62261110.0055555555555555566/250833.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/327/1116?format=asciiOpticaldefaultJ/MNRAS/327/1116/table2Data for clusters in the SombrerorecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[LFB2001]Cluster designation (1)meta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainVmagV magnitude (2)magphot.mag;em.opt.Vfloat(V-I)0Dereddened V-I colour index (2)magphot.color;em.opt.V;em.opt.IfloatReff? Estimated effective (half-light) cluster radiuspcphys.size.radiusfloatnullableu_Reff[)] Uncertainty flag for objects fainter than V=23.5meta.code.errorcharSimbadSimbad column added by the CDSmeta.ref.urlchar