J/MNRAS/298/753ivo://CDS.VizieR/J/MNRAS/298/753doi:10.26093/cds/vizier.72980753CDSPigulski A.Kolaczkowski Z.2024-06-25T20:18:07Z1998-09-02T13:21:40ZCDS support team

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

cds-question@unistra.frstellar-associationsb-starsccd-photometryWe present the results of the photometric CCD search for B-type variables in the central region of the Cygnus OB2 association. We discover 29 new variables including two Beta Cephei stars. The photometric data in the Cousins I band are given in file photom.dat. In addition, we present BV(RI)c and H_{alpha}_ photometry for stars in the observed field. This is Table 4 of the paper, available only in electronic form.1998MNRAS.298..753Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/298/753CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/298/753https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/298/753http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/298/753https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/298/753https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/298/753http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/298/753GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/298/753/table4 (Cross-identifications, positions, membership, BV(RI)c and H_alpha photometry of stars in the observed field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/298/753/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/298/753/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/298/753/table4?GETtext/xml+votable180.050000true308.272666741.21938890.0055555555555555566/14692-14693https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/298/753?format=asciiOpticaldefaultJ/MNRAS/298/753/table4Cross-identifications, positions, membership, BV(RI)c and H_alpha photometry of stars in the observed fieldrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCygONStar number according to Reddish et al. (1966PROE....5..111R), <Ass Cyg ON 2-NNNN>meta.idcharMT91Star number according to Massey & Thompson (1991AJ....101.1408M), see Note (1)meta.idcharSchulteStar number according to Schulte numbering system, see Note (2)meta.idcharphFlag[*] Flag set when photometry available in file photom.datmeta.notecharXposX coordinate of a star in Fig.2pixpos.cartesian.x;instr.detfloatYposY coordinate of a star in Fig.2pixpos.cartesian.y;instr.detfloatImag? I magnitude, see Note (3)magphot.mag;em.opt.IfloatnullableR-I? R-I colour index, see Note (3)magphot.color;em.opt.R;em.opt.IfloatnullableV-I? V-I colour index, see Note (3)magphot.color;em.opt.V;em.opt.IfloatnullableB-V? B-V colour index, see Note (3)magphot.color;em.opt.B;em.opt.VfloatnullableAlpha? {alpha} colour index, see Note (4)magphot.colorfloatnullableMembMembershib flag, see text for explanationmeta.code.membercharI0? Dereddened I magnitudemagphot.mag;em.opt.Ifloatnullable(R-I)0? Dereddened R-I colour indexmagphot.color;em.opt.R;em.opt.IfloatnullableRAJ2000Right Ascension J2000 (hours) (5)pos.eq.ra;meta.mainDEJ2000Declination J2000 (sign) (5)pos.eq.dec;meta.mainJ/MNRAS/298/753/photomDifferential Ic-filter photometryHJDHeliocentric Julian daydtime.epochdoubleNameStar namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDeltaIDifferential Ic magnitudesmagphot.mag;arith.difffloat