J/A+AS/111/85ivo://CDS.VizieR/J/A+AS/111/85CDSVAZQUEZ R.A.WILL J.-M.PRADO P.FEINSTEIN A.1997-12-09T17:48:07Z1997-12-09T18:48:03ZCDS support team

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

cds-question@unistra.fropen-star-clustersccd-photometryThe very young open cluster Pis 20 has been investigated using CCD UBVR photometry. New blue faint members were found down to V=19mag. With them we obtain a better definition of the lower cluster main sequence. Using the fitting method, we derive a cluster distance of d=3600pc (V_0_-M_V_=12.80). The mean color excess is <E_B-V_>=1.24mag.1995A&AS..111...85Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/111/85CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/111/85https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/111/85http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/111/85https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/111/85https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/111/85http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/111/85GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+AS/111/85/table2Observed colors and magnitudes in Pismis 20recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqNumSequential star numbermeta.id;meta.mainintXX positionpos.cartesian.x;instr.detfloatYY positionpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloatu_Vmag[: ] Uncertainty flag on Vmag (1)meta.code.errorcharB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloatu_B-V[: ] Uncertainty flag on B-V (1)meta.code.errorcharU-B[]? U-B colour indexmagphot.color;em.opt.U;em.opt.Bfloatu_U-B[: ] Uncertainty flag on U-B (1)meta.code.errorcharV-R[]? V-R colour indexmagphot.color;em.opt.V;em.opt.Rfloatu_V-R[: ] Uncertainty flag on V-R (1)meta.code.errorcharJ/A+AS/111/85/table5Intrinsic colors, magnitudes and masses of Pismis 20 starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqNumSequential star numbermeta.id;meta.mainintV0Intrinsic V magnitudemagphot.mag;em.opt.Vfloat(B-V)0[]? Intrinsic B-V colour indexmagphot.color;em.opt.B;em.opt.VfloatE(B-V)[]? B-V colour excessmagphot.color.excessfloat(U-B)0[]? Intrinsic U-B colour indexmagphot.color;em.opt.U;em.opt.BfloatE(U-B)[]? U-B colour excessmagphot.color.excessfloatMVAbsolute V magnitudemagphys.magAbs;em.optfloatMassStar masssolMassphys.massfloatRem[ab*] Remarks (1)meta.notechar