J/A+A/493/79ivo://CDS.VizieR/J/A+A/493/79doi:10.26093/cds/vizier.34930079CDSMarco A.Negueruela I.2017-06-20T13:16:17Z2009-01-31T15:14:40ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryvisible-astronomybroad-band-photometryThe very luminous blue supergiant HD 80077 has been claimed to be a member of the young open cluster Pismis 11, and hence a hypergiant. Membership of the cluster would mean that it is one of the brightest stars in the Galaxy, and one of the few evolved very massive stars whose distance can be accurately determined. We carry out a comprehensive study of the open cluster Pismis 11, which allows us to derive with accuracy its distance and reddening. We obtained UBVRI photometry of the cluster field and low-resolution spectroscopy of a number of putative members. We derive spectral types from the spectra and determine that the reddening in this direction is standard. We then carry out a careful photometric analysis that allows us to determine individual reddening values, deriving unreddened parameters that are used for the main sequence fit.2009A&A...493...79Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/493/79CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/493/79https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/493/79http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/493/79https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/493/79https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/493/79http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/493/79GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/493/79/pismis11 (Position and photometry for stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/493/79/pismis11?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/493/79/pismis11?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/493/79/pismis11?GETtext/xml+votable180.050000true139.00191667-49.971166670.005555555555555556Cone search capability for table J/A+A/493/79/ali5 (Position and photometry for stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/493/79/ali5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/493/79/ali5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/493/79/ali5?GETtext/xml+votable180.050000true139.08241667-49.741694440.0055555555555555566/37841https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/493/79?format=asciiOpticalInfrareddefaultJ/A+A/493/79/pismis11Position and photometry for starsXpos? X-Pixel position in the mappixpos.cartesian.x;instr.detfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/147] Number of the star in our nomenclaturemeta.numberintprimaryYpos? Y-Pixel position in the mappixpos.cartesian.y;instr.detfloatnullableRAJ2000? Right ascension (J2000.0)pos.eq.ra;meta.mainnullableDEJ2000? Declination (J2000.0)pos.eq.dec;meta.mainnullableUSNOB1? USNOB-1 identificationmeta.idcharNote[2MASS ] For stars that have not identification in USNOB-1, we use 2MASS identificationmeta.notecharVmag? Magnitude in V bandmagphot.mag;em.opt.Vfloatnullablee_Vmag? Deviation Standard in Vmagstat.error;phot.mag;em.opt.Vfloatnullableo_Vmag? Number of measurements in Vmeta.numberintnullableV-R? Color index (V-R)magphot.color;em.opt.V;em.opt.Rfloatnullablee_V-R? Deviation Standard in (V-R)magstat.error;phot.color;em.opt.Vfloatnullableo_V-R? Number of measurements in (V-R)meta.numberintnullableV-I? Color index (V-I)magphot.color;em.opt.V;em.opt.Ifloatnullablee_V-I? Deviation Standard in (V-I)magstat.error;phot.color;em.opt.Vfloatnullableo_V-I? Number of measurements in (V-I)meta.numberintnullableU-B? Color index (U-B)magphot.color;em.opt.U;em.opt.Bfloatnullablee_U-B? Deviation Standard in (U-B)magstat.error;phot.color;em.opt.Ufloatnullableo_U-B? Number of measurements in (U-B)meta.numberintnullableBmag? Magnitude in Bmagphot.mag;em.opt.Bfloatnullablee_Bmag? Deviation standard in Bmagstat.error;phot.mag;em.opt.Bfloatnullableo_Bmag? Number of measurements in Bmeta.numberintnullableB-V? Color index (B-V)magphot.color;em.opt.B;em.opt.Vfloatnullablee_B-V? Deviation Standard in (B-V)magstat.error;phot.color;em.opt.Bfloatnullableo_B-V? Number of measurements in (B-V)meta.numberintnullableFlag[*] * indicates "Photometry for membership" in tables 8 and 9 (for tables 3 and 5 resp.)meta.code.errorcharJ/A+A/493/79/ali5Position and photometry for starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/147] Number of the star in our nomenclaturemeta.numberintXpos? X-Pixel position in the mappixpos.cartesian.x;instr.detfloatnullableYpos? Y-Pixel position in the mappixpos.cartesian.y;instr.detfloatnullableRAJ2000? Right ascension (J2000.0)pos.eq.ra;meta.mainnullableDEJ2000? Declination (J2000.0)pos.eq.dec;meta.mainnullableUSNOB1? USNOB-1 identificationmeta.idcharNote[2MASS ] For stars that have not identification in USNOB-1, we use 2MASS identificationmeta.notecharVmag? Magnitude in V bandmagphot.mag;em.opt.Vfloatnullablee_Vmag? Deviation Standard in Vmagstat.error;phot.mag;em.opt.Vfloatnullableo_Vmag? Number of measurements in Vmeta.numberintnullableV-R? Color index (V-R)magphot.color;em.opt.V;em.opt.Rfloatnullablee_V-R? Deviation Standard in (V-R)magstat.error;phot.color;em.opt.Vfloatnullableo_V-R? Number of measurements in (V-R)meta.numberintnullableV-I? Color index (V-I)magphot.color;em.opt.V;em.opt.Ifloatnullablee_V-I? Deviation Standard in (V-I)magstat.error;phot.color;em.opt.Vfloatnullableo_V-I? Number of measurements in (V-I)meta.numberintnullableU-B? Color index (U-B)magphot.color;em.opt.U;em.opt.Bfloatnullablee_U-B? Deviation Standard in (U-B)magstat.error;phot.color;em.opt.Ufloatnullableo_U-B? Number of measurements in (U-B)meta.numberintnullableBmag? Magnitude in Bmagphot.mag;em.opt.Bfloatnullablee_Bmag? Deviation standard in Bmagstat.error;phot.mag;em.opt.Bfloatnullableo_Bmag? Number of measurements in Bmeta.numberintnullableB-V? Color index (B-V)magphot.color;em.opt.B;em.opt.Vfloatnullablee_B-V? Deviation Standard in (B-V)magstat.error;phot.color;em.opt.Bfloatnullableo_B-V? Number of measurements in (B-V)meta.numberintnullableFlag[*] * indicates "Photometry for membership" in tables 8 and 9 (for tables 3 and 5 resp.)meta.code.errorcharJ/A+A/493/79/table8Photometry for membership in Pismis 11recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/147] Number of the star in our nomenclaturemeta.numberintV0magDeredening magnitude in V bandmagphot.mag.reddFree;em.opt.Vfloate_V0magDeviation Standard in V0magstat.error;phot.mag;em.opt.VfloatE(B-V)Color excess in (B-V)magphot.color.excessfloate_E(B-V)Deviation Standard in E(B-V)magstat.errorfloatAV? Absorption in V bandmagphot.mag;em.opt.Vfloatnullablee_AV? Deviation standard in AVmagstat.errorfloatnullable(B-V)0Intrinsic color in (B-V)magphot.color.reddFreefloate_(B-V)0Deviation Standard in (B-V)0magstat.errorfloatSpTypeSpectral type obtained by photometrysrc.spType;meta.modelledcharJ/A+A/493/79/table9Photometry for membership in Alicante 5e_V0magDeviation Standard in V0magstat.error;phot.mag;em.opt.VfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/147] Number of the star in our nomenclaturemeta.numberintV0magDeredening magnitude in V bandmagphot.mag.reddFree;em.opt.VfloatE(B-V)Color excess in (B-V)magphot.color.excessfloate_E(B-V)Deviation Standard in E(B-V)magstat.errorfloatAV? Absorption in V bandmagphot.mag;em.opt.Vfloatnullablee_AV? Deviation standard in AVmagstat.errorfloatnullable(B-V)0Intrinsic color in (B-V)magphot.color.reddFreefloate_(B-V)0Deviation Standard in (B-V)0magstat.errorfloatSpTypeSpectral type obtained by photometrysrc.spType;meta.modelledchar