J/A+AS/111/407ivo://CDS.VizieR/J/A+AS/111/407CDSPARTHASARATHY M.JAIN S.K.1997-12-09T17:46:51Z1997-12-09T18:46:48ZCDS support team

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

cds-question@unistra.frstellar-associationsextinctionFrom an ultra-low dispersion spectroscopic survey of the Cyg OB2 association several red and reddened stars are detected. Most of these stars appear to be reddened early-type stars belonging to the Cygnus OB2 association. The distance moduli V_0_-M_v_=11.2 and minimum reddening E(B-V)=1.2 suggests that some of the red stars in the magnitude range 15 to 17 are most likely reddened late B and early A main sequence stars of the Cyg OB2 association.1995A&AS..111..407Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/111/407CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/111/407https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/111/407http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/111/407https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/111/407https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/111/407http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/111/407GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+AS/111/407/table1Red and reddened stars in the region of Cygnus OB2 (VI Cygni) associationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqNunbSequential numbermeta.id;meta.mainintRef1Number of the star in Reddish et al. (1967). The number in parenthesis gives the field number in Reddish et al. (1967). NI indicates new identificationmeta.idcharVmag[]? Visual magnitudemagphot.mag;em.opt.VfloatB-V[]? B-V colourmagphot.color;em.opt.B;em.opt.VfloatGridGrid identification (Fig. No/grid)meta.idcharRef2[]? Number of the star in Massey &Thompson (1991)meta.idint