J/MNRAS/431/1405ivo://CDS.VizieR/J/MNRAS/431/1405doi:10.26093/cds/vizier.74311405CDSForte J.C.Faifer F.R.Vega E.I.Bassino L.P.Smith Castelli A.V.,Cellone S.A.Geisler D.2024-07-21T20:14:30Z2014-06-27T16:05:59ZCDS support team

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

cds-question@unistra.frgalaxiesglobular-star-clustersvisible-astronomysloan-photometrybroad-band-photometryWe present Gemini griz' photometry for 521 globular cluster (GC) candidates in a 5.5x5.5arcmin^2^ field centred 3.8-arcmin to the south and 0.9-arcmin to the west of the centre of the giant elliptical galaxy NGC 4486. All these objects have previously published (C-T1) photometry. We also present new (C-T1) photometry for 338 globulars, within 1.7-arcmin in galactocentric radius, which have (g-z) colours in the photometric system adopted by the Virgo Cluster Survey of the Advanced Camera for Surveys of the Hubble Space Telescope (HST). These photometric data are used to define a self-consistent multicolour grid (avoiding polynomial fits) and preliminarily calibrated in terms of two chemical abundance scales. The resulting multicolour colour-chemical abundance relations are used to test GC chemical abundance distributions. This is accomplished by modelling the 10 GC colour histograms that can be defined in terms of the Cgriz' bands. Our results suggest that the best fit to the GC observed colour histograms is consistent with a genuinely bimodal chemical abundance distribution N_GC_(Z). On the other side, each ('blue' and 'red') GC subpopulation follows a distinct colour-colour relation.2013MNRAS.431.1405Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/431/1405CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/73/671 : M87 globular clusters BVI photometry (Couture+, 1990)J/AJ/106/493 : Globular clusters in M87 (Lee+, 1993)J/AJ/115/1801 : VRI photometry of M87 globular clusters (Harris+ 1998)J/ApJ/513/733 : Globular cluster system in M87 (Kundu+, 1999)J/ApJ/559/812 : Globular cluster system in M87 (Hanes+, 2001)J/MNRAS/382/1947 : CT1 photometry in NGC 1399 and NGC 4486 (Forte+, 2007)J/AJ/131/866 : Hot populations in M87 globular clusters (Sohn+, 2006)J/ApJ/559/812 : Globular cluster system in M87 (Hanes+, 2001)J/ApJ/613/279 : ACS Virgo Cluster Survey. III. M87 (Jordan+, 2004)J/ApJ/703/42 : HST photometry of M87 globular clusters (Peng+, 2009)J/ApJ/743/149 : Color-metallicity relations. II. M87 GCs (Yoon+, 2011)J/ApJS/197/33 : The M87 globular cluster system (Strader+, 2011)J/ApJ/748/29 : Spectroscopy of M87 globular clusters (Romanowsky+, 2012)J/other/Sci/338.355 : 1.3mm VLBI detections of M87 (Doeleman+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/431/1405https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/431/1405http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/431/1405https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/431/1405https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/431/1405http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/431/1405GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/431/1405/table3 (Multicolour photometry for globular cluster candidates in the NGC 4486 (M87) field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/431/1405/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/431/1405/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/431/1405/table3?GETtext/xml+votable180.050000true187.702191412.35597220.005555555555555556Cone search capability for table J/MNRAS/431/1405/table4 (Globular cluster candidates with ACS and Washington photometry within a galactocentric radius of 100arcsec in NGC 4486 (M87))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/431/1405/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/431/1405/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/431/1405/table4?GETtext/xml+votable180.050000true187.703735412.36451340.0055555555555555566/27765https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/431/1405?format=asciiOpticaldefaultJ/MNRAS/431/1405/table3Multicolour photometry for globular cluster candidates in the NGC 4486 (M87) fieldID[12328/97434] Forte et al. (2007MNRAS.382.1947F) number, <[FFG2007] NGC 4486 NNNNN> in Simbadmeta.id;meta.mainintprimaryg'mag0g' extinction-corrected magnitudemagphot.mag;em.opt.Bfloat(C-g')0(C-g') extinction-corrected colour index (G1)magphot.color;em.opt;em.optfloat(C-r')0(C-r') extinction-corrected colour index (G1)magphot.color;em.opt;em.optfloat(C-i')0(C-i') extinction-corrected colour index (G1)magphot.color;em.opt;em.optfloat(C-z')0(C-z') extinction-corrected colour index (G1)magphot.color;em.opt;em.optfloat(g'-r')0(g'-r') extinction-corrected colour index (G1)magphot.color;em.opt.B;em.opt.Rfloat(g'-i')0(g'-i') extinction-corrected colour index (G1)magphot.colorfloat(g'-z')0(g'-z') extinction-corrected colour index (G1)magphot.colorfloat(r'-i')0(r'-i') extinction-corrected colour index (G1)magphot.color;em.opt.R;em.opt.Ifloat(r'-z')0(r'-z') extinction-corrected colour index (G1)magphot.colorfloat(i'-z')0(i'-z') extinction-corrected colour index (G1)magphot.color;em.opt.I;em.opt.IfloatT1mag0T1 extinction-corrected magnitudemagphot.mag;em.opt.Rfloat(C-T1)0C-T1 extinction-corrected colour index (G1)magphot.color;em.opt.U;em.opt.Rfloat_RAPosition from Forte et al., 2007 (Cat. J/MNRAS/382/1947) (right ascension part)degpos.eq.ra;meta.main_DEPosition from Forte et al., 2007 (Cat. J/MNRAS/382/1947) (declination part)degpos.eq.dec;meta.mainJ/MNRAS/431/1405/table4Globular cluster candidates with ACS and Washington photometry within a galactocentric radius of 100arcsec in NGC 4486 (M87)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainT1mag0T1 extinction-corrected magnitude (G1)magphot.mag;em.opt.Rfloatgmag0g extinction-corrected magnitude (G1)magphot.mag;em.opt.Bfloat(C-T1)0C-T1 extinction-corrected colour index (G1)magphot.color;em.opt.U;em.opt.Rfloat(g-z)0ACS g-z extinction-corrected colour index (G1)magphot.colorfloat