J/AJ/101/1408ivo://CDS.VizieR/J/AJ/101/1408doi:10.26093/cds/vizier.51011408CDSMassey P.Thompson A.B.2023-04-06T16:49:23Z1998-09-21T07:12:17ZCDS support team

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

cds-question@unistra.frstellar-associationsvisible-astronomybroad-band-photometryccd-photometryThe galactic association Cygnus OB2, which contains heavily reddened O and B stars, has been studied using CCD UBV photometry and spectroscopy. The file "mt91.dat" contains precise coordinates, UBV photometry, and spectral types from the study of Cygnus OB2, and merges the tables 2, 5 and 6 from the paper.1991AJ....101.1408Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/101/1408CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/111/407 : VI Cygni red + reddened stars (Parthasarathy+, 1995)J/AJ/107/1433 : Cygnus OB2 polarimetry (Kobulnicky+, 1994)J/MNRAS/298/753 : Variables in Cygnus OB2 (Pigulski+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/101/1408https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/101/1408http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/101/1408https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/101/1408https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/101/1408http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/101/1408GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/101/1408/mt91 (Observations in Cyg OB2 (tables 2,5,6))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/101/1408/mt91?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/101/1408/mt91?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/101/1408/mt91?GETtext/xml+votable180.050000true307.9062541.22252780.0055555555555555566/14692-14694https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/101/1408?format=asciiOpticaldefaultJ/AJ/101/1408/mt91Observations in Cyg OB2 (tables 2,5,6)RemRemarks (5)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMT91[1/799]+? Star identification (1)meta.idintnullableprimaryindexedRAJ2000Right Ascension J2000 (hours) (2)pos.eq.ra;meta.mainDEJ2000Declination J2000 (sign) (2)pos.eq.dec;meta.mainVmag? V magnitudemagphot.mag;em.opt.VfloatnullableU-B? U-B colour derived from B-Vmagphot.color;em.opt.U;em.opt.Bfloatnullableu_U-B[:?] Uncertainty flag on U-B (3)meta.code.errorcharB-V? B-V colourmagphot.color;em.opt.B;em.opt.Vfloatnullableu_B-V[:?] Uncertainty flag on B-V (3)meta.code.errorcharSpTypeMK Spectral type (4)src.spTypechar