II/127ivo://CDS.VizieR/II/127CDSLindroos K.P.2000-07-18T23:03:29Z2000-07-18T23:03:25ZCDS support team

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

cds-question@unistra.frvisible-astronomymedium-band-photometrymultiple-starsAstrophysical parameters (MK class, colour excess, absolute magnitude, distance, effective temperature, mass and age) are derived from calibrations of the uvbybeta indices for the members of 253 double stars with O or B type primaries and faint secondaries. The photometric spectral classification is compared to the MK classes and the agreement is very good. The derived data together with spectroscopic and JHKL data indicate that these stars are likely to be members of physical systems. For 90% of the physical pairs the projected separations between the components is less than 25,000 AU. A majority of the physical secondaries are late type stars and 50% of them are contracting towards the zero-age main-sequence (ZAMS).1985A&AS...60..183Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/II/127CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=II/127https://vizier.iucaa.in/viz-bin/VizieR-2?-source=II/127http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=II/127https://vizier.cds.unistra.fr/viz-bin/votable?-source=II/127https://vizier.iucaa.in/viz-bin/votable?-source=II/127http://vizieridia.saao.ac.za/viz-bin/votable?-source=II/127GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultII/127/dataData (table VI)HDHD numberintprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intCompComponent designation as given in Paper IIcharrelRelation between secondary and primarycharSp1MK class from Paper I or from literaturecharSp2MK class estimated from photometric indicescharE(b-y)? Colour Excess: if negative, assumed to be 0magfloatnullableVMag? Absolute magnitudemagfloatnullableDmag? Height above zero-age main sequencemagfloatnullablelnLum? Logarithm of the luminositylog(solLum)floatnullablelnTeff? Logarithm of the effective temperaturelog(K)floatnullablel_Age[ <] Indicates upper limit of AgecharAge? Age of the primaryMaintnullableMass? Mass for primarysolMassfloatnullableDist? DistancepcintnullableSep? Projected separation between componentsAUintnullablerem[ CSB?] Remarkscharn_HD[ *] Indicates a note detailed in notes.datcharII/127/notesNotes on Individual StarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intHDHD number of starintCompComponent(s)charTextText of notechar