J/AJ/122/1330ivo://CDS.VizieR/J/AJ/122/1330doi:10.26093/cds/vizier.51221330CDSChandar R.Ford H.C.Tsvetanov Z.2023-04-06T16:50:44Z2002-02-09T21:02:56ZCDS support team

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

cds-question@unistra.frstellar-associationsvisible-astronomykron-cousins-photometryIn this paper, we present the discovery of 114 compact star clusters in the nearby spiral galaxy M81 from B-, V-, and I-band Hubble Space Telescope Wide Field Planetary Camera 2 imaging in eight fields, covering a total area of ~40arcmin^2^. The fields sample a variety of environments (both spiral and interarm regions), as well as a range of projected galactocentric distances from 2 to 12kpc. The sample is complete to V~22, deeper by ~1mag than any previous cluster survey in M81. We present details of the separation of clusters from both stellar sources and background galaxies, which has been based solely on structural parameters and morphology and not using any color cuts, as is necessary for ground-based surveys. We present magnitudes and colors of detected clusters. Surface brightness profiles are compared with single-mass King models, giving a range of core radii for the clusters in our sample between 0.2 and 7pc.2001AJ....122.1330Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/122/1330CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/122/1330https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/122/1330http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/122/1330https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/122/1330https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/122/1330http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/122/1330GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/122/1330/table2 (The cluster sample and properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/122/1330/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/122/1330/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/122/1330/table2?GETtext/xml+votable180.050000true149.02337569.1120750.0055555555555555566/7606https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/122/1330?format=asciiOpticaldefaultJ/AJ/122/1330/table2The cluster sample and propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[CFT2001]Cluster identification numbermeta.id;meta.mainintprimaryRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainGCDisDeprojected galactocentric distance (1)kpcpos.distancefloatVmagThe V band magnitude (Johnson-Cousins)magphot.mag;em.opt.Vfloate_VmagUncertainty in Vmag (2)magstat.errorfloatf_Vmag[ab] Flag on Vmag (3)meta.code.errorcharColRadThe color radiusarcsecphys.angSize;srcfloatB-VThe (B-V) color (Johnson-Cousins)magphot.color;em.opt.B;em.opt.Vfloate_B-VUncertainty in B-V (2)magstat.errorfloatV-IThe (V-I) color (Johnson-Cousins)magphot.color;em.opt.V;em.opt.Ifloate_V-IUncertainty in V-I (2)magstat.errorfloatE(B-V)The local reddening (see section 3.7)magphot.color.excessfloatCoreRadCluster core radius (see section 4)pcphys.size.radiusfloatJ/AJ/122/1330/table3Comparison of photometry with previous workrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[CFT2001]Cluster identification numbermeta.id;meta.mainintVmagV magnitude (this work)magphot.mag;em.opt.VfloatB-VB-V colour index (this work)magphot.color;em.opt.B;em.opt.VfloatNameOther name (1)meta.idcharn_Name[a] Note on Name (2)meta.notecharVmag2? V magnitude (previous work)magphot.mag;em.opt.VfloatnullableB-V2? B-V colour index (previous work)magphot.color;em.opt.B;em.opt.Vfloatnullable