J/A+A/567/A73ivo://CDS.VizieR/J/A+A/567/A73doi:10.26093/cds/vizier.35670073CDSMarco A.Negueruela I.Gonzalez-Fernandez C.Maiz Apellaniz J.Dorda R.,Clark J.S.2017-09-27T05:55:35Z2014-07-16T09:29:27ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryvisible-astronomybroad-band-photometryIt has been suggested that the compact open cluster VdBH 222 is a young massive distant object. We set out to characterise VdBH 222 using a comprehensive set of multi-wavelength observations. We obtained multi-band optical (UBVR) and near-infrared (JHKs) photometry of the cluster field, as well as multi-object and long-slit optical spectroscopy for a large sample of stars in the field. We applied classical photometric analysis, as well as more sophisticated methods using the CHORIZOS code, to determine the reddening to the cluster. We then plotted dereddened HR diagrams and determined cluster parameters via isochrone fitting.2014A&A...567A..73Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/567/A73CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/567/A73https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/567/A73http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/567/A73https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/567/A73https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/567/A73http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/567/A73GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/567/A73/table7 (Optical photometry and coordinates for stars in the field of the open cluster VdBH 222)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/567/A73/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/567/A73/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/567/A73/table7?GETtext/xml+votable180.050000true259.6697083-38.32194440.005555555555555556Cone search capability for table J/A+A/567/A73/table8 (Near-infrared photometry and coordinates for stars in the field of the open cluster VdBH 222)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/567/A73/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/567/A73/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/567/A73/table8?GETtext/xml+votable180.050000true259.7463333-38.261250.0055555555555555566/424387.952274030004205e-20 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/567/A73?format=asciiOpticalInfrareddefaultJ/A+A/567/A73/table7Optical photometry and coordinates for stars in the field of the open cluster VdBH 222recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStar[17/1078] Star identification (number)meta.id;meta.mainintprimaryMSimbad column added by the CDSmeta.ref.urlcharRAJ2000Right ascension J2000 (1)pos.eq.ra;meta.mainDEJ2000Declination (J2000) (1)pos.eq.dec;meta.mainVmagV magnitudemagphot.mag;em.opt.Vfloate_VmagError for V magnitude (2)magstat.error;phot.mag;em.opt.Vfloato_VmagNumber of measurements for V magnitudemeta.numberintB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-VError for B-V colour index (2)magstat.error;phot.color;em.opt.Bfloato_B-VNumber of measurements for B-V colour indexmeta.numberintU-B? U-B colour index (3)magphot.color;em.opt.U;em.opt.Bfloatnullablee_U-B? Error for U-B colour index (2)magstat.error;phot.color;em.opt.UfloatnullableV-R? V-R colour indexmagphot.color;em.opt.V;em.opt.Rfloatnullablee_V-R? Error for V-R colour index (2)magstat.error;phot.color;em.opt.Vfloatnullableo_V-R? Number of measurements for V-R colour indexmeta.numberintnullableIRJHKs photometry for this star (table8)meta.ref.urlcharJ/A+A/567/A73/table8Near-infrared photometry and coordinates for stars in the field of the open cluster VdBH 222recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[45/3677] Field star identification (number)meta.id;meta.mainintStar[17/1078]? Star identification (number) in Table 7 (if existing). Only 480 stars have optical photometry toometa.idintnullableRAJ2000Right ascension J2000 (1)pos.eq.ra;meta.mainDEJ2000Declination (J2000) (1)pos.eq.dec;meta.mainJmagJ magnitude (2)magphot.mag;em.IR.Jfloate_JmagError for J magnitudemagstat.error;phot.mag;em.IR.JfloatHmagH magnitude (2)magphot.mag;em.IR.Hfloate_HmagError for H magnitudemagstat.error;phot.mag;em.IR.HfloatKsmag? Ks magnitude (2)magphot.mag;em.IR.Kfloatnullablee_Ksmag? Error for Ks magnitudemagstat.error;phot.mag;em.IR.KfloatnullableJ/A+A/567/A73/table4Photometric values for likely members with (U-B) colourrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[MGB] Star type: Main-sequence, Giant or Blue supergiantsrc.class.luminositycharStar[59/1069] Star identification (number)meta.id;meta.mainintQQ parameter for each likely member (1)phot.color.reddFreefloatSpTypeMK spectral type for each likely member (2)src.spTypechar(B-V)0Intrinsic colour (B-V)_0_ for each likely member (3)magphot.color;em.opt.B;em.opt.VfloatE(B-V)Individual values of the colour excess E(B-V) for each likely member (4)magphot.color.excessfloatV0Instrinsic magnitudes V_0_for each likely member (5)magphot.mag;em.opt.VfloatJ/A+A/567/A73/table5Photometric values for likely members without (U-B) colourrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[MGB] Star type: Main-sequence, Giant or Blue supergiantsrc.class.luminositycharStar[34/1043] Star identification (number)meta.id;meta.mainint(B-V)0Intrinsic colour (B-V)_0_ for each likely member (1)magphot.color;em.opt.B;em.opt.VfloatV0Instrinsic magnitudes V_0_for each likely member (2)magphot.mag;em.opt.Vfloat