J/ApJ/835/184ivo://CDS.VizieR/J/ApJ/835/184doi:10.26093/cds/vizier.18350184CDSGonzalez-Lopezlira R.A.Lomeli-Nunez L.Alamo-Martinez K.,Ordenes-Briceno Y.Loinard L.Georgiev I.Y.Munoz R.P.Puzia T.H.,Bruzual G.A.Gwyn S.2017-10-09T08:22:11Z2017-09-19T16:23:23ZCDS support team

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

cds-question@unistra.frglobular-star-clustersgalaxiesinfrared-sourcesinfrared-photometryvisible-astronomybroad-band-photometryWe aim to explore the relationship between globular cluster total number, N_GC_, and central black hole mass, M_*_, in spiral galaxies, and compare it with that recently reported for ellipticals. We present results for the Sbc galaxy NGC 4258, from Canada-France-Hawaii Telescope data. Thanks to water masers with Keplerian rotation in a circumnuclear disk, NGC 4258 has the most precisely measured extragalactic distance and supermassive black hole mass to date. The globular cluster (GC) candidate selection is based on the (u*-i') versus (i'-Ks) diagram, which is a superb tool to distinguish GCs from foreground stars, background galaxies, and young stellar clusters, and hence can provide the best number counts of GCs from photometry alone, virtually free of contamination, even if the Galaxy is not completely edge-on. The mean optical and optical-near-infrared colors of the clusters are consistent with those of the Milky Way and M 31, after extinction is taken into account. We directly identify 39 GC candidates; after completeness correction, GC luminosity function extrapolation, and correction for spatial coverage, we calculate a total N_GC_=144+/-31_-36_^+38^ (random and systematic uncertainties, respectively). We have thus increased to six the sample of spiral galaxies with measurements of both M_*_ and N_GC_. NGC 4258 has a specific frequency S_N_=0.4+/-0.1 (random uncertainty), and is consistent within 2{sigma} with the N_GC_ versus M_*_ correlation followed by elliptical galaxies. The Milky Way continues to be the only spiral that deviates significantly from the relation.2017ApJ...835..184Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/835/184CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/202 : Globular Clusters in the Milky Way (Harris, 1997)J/AJ/112/1335 : Hubble Deep Field observations (Williams+ 1996)J/A+AS/139/393 : Young Massive Star Clusters. II. (Larsen, 1999)J/MNRAS/343/665 : VI photometry of globular cluster systems (Goudfrooij+, 2003)J/PAZh/33/403 : GCs as gravitational lenses (Bukhmastova+, 2007)J/ApJS/171/101 : GCs in the ACS Virgo cluster survey (Jordan+, 2007)J/ApJ/659/1040 : VLBI monitoring of NGC 4258 (Argon+, 2007)J/ApJ/757/83 : The Blanco Cosmology Survey (BCS) (Desai+, 2012)J/ApJ/772/82 : A catalog of globular cluster systems (Harris+, 2013)J/MNRAS/441/3570 : Nuclear star clusters in 228 spiral gal. (Georgiev+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/835/184https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/835/184http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/835/184https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/835/184https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/835/184http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/835/184GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/835/184/gccand (Colors and i'-band shape parameters of globular cluster candidates (tables 6 and 7))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/835/184/gccand?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/835/184/gccand?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/835/184/gccand?GETtext/xml+votable180.050000true184.469647.4370.0055555555555555566/10977 10979 10980 10982https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/835/184?format=asciiOpticalInfrareddefaultJ/ApJ/835/184/gccandColors and i'-band shape parameters of globular cluster candidates (tables 6 and 7)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGLLCluster name (JHHMMSS+DDMMSS)meta.id;meta.maincharRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.main(g')0[19.1/22.7]? Dereddened CFHT/Megacam g' (AB) magnitudemagphot.mag;em.opt.Bfloatnullablee_(g')0? Error in (g')0magstat.errorfloatnullable(Ks)0[18/21.7] Dereddened CFHT/WIRCam Ks (AB) magnitudemagphot.mag;em.IR.Kfloate_(Ks)0Error in (Ks)0magstat.errorfloat(u*-i')0[1.5/2.5] Dereddened (u*-i') color indexmagphot.color;em.opt;em.optfloate_(u*-i')0Error in (u*-i')0magstat.errorfloat(g'-r')0[0.3/0.7]? Dereddened (g'-r') color indexmagphot.color;em.opt;em.optfloatnullablee_(g'-r')0? Error in (g'-r')0magstat.errorfloatnullable(g'-i')0[0.5/1]? Dereddened (g'-i') color indexmagphot.color;em.opt;em.optfloatnullablee_(g'-i')0? Error in (g'-i')0magstat.errorfloatnullable(i'-Ks)0[-0.3/0.5] Dereddened (i'-Ks) color indexmagphot.color;em.IR;em.IRfloate_(i'-Ks)0Error in (i'-Ks)0magstat.errorfloatSpMod[-0.3/1.5] 100x(SExtractor SPREAD_MODEL) in the i' band (1)instr.det.psffloatFWHM[0.6/0.9] FWHM in the i' bandarcsecphys.angSizefloatS/GSExtractor CLASS_STAR in the i' band (1=star) (2)instr.bandpassfloatRad[0.3/0.7] SExtractor FLUX_RADIUS in the i' bandarcsecphys.angSize;srcfloatl_reLimit flag for half-light radius in the i' bandmeta.code.errorcharre[0.7/6] Half-light radius in the i'bandpcphys.size.radiusfloatE_re? Upper error of half-light radius in the i'bandpcstat.error;stat.maxfloatnullablee_re? Lower error of half-light radius in the i'bandpcstat.errorfloatnullableShapeType of King profile fitted (KINGn or KINGx) (3)meta.codecharCConcentration index r_tidal/r_core of King profilemeta.code;spect.indexdoubleSNR[18/338] Signal-to-noise ratio of datastat.snrfloatChi2[0.07/9] Chi2 of fitstat.fit.chi2float