J/AcA/57/249ivo://CDS.VizieR/J/AcA/57/249doi:10.26093/cds/vizier.120570249CDSCiechanowska A.Pietrzynski G.Kolaczkowski Z.Wyrzykowski L.,Szewczyk O.Kubiak M.Udalski A.Szymanski M.K.2025-09-25T20:15:06Z2010-03-09T07:49:33ZCDS support team

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

cds-question@unistra.fropen-star-clustersvariable-starsinfrared-photometryvisible-astronomyphotometryWe present the results from a search for variable stars in the field of a young open cluster NGC 6755. Altogether seventy one variable stars have been discovered. Thirty one of them are eclipsing systems. This group contains ten EA, four EB and seventeen EW-type systems. Photometric variability of four late type stars is most probably caused by their chromospherical activity. Another seven detected variable stars have light curves typical for pulsating stars from the main instability strip. Four of them we tentatively classified as gamma Dor, one as delta Sct and two as Population II Cepheid variable stars, respectively. Star designated as V40 can be either another population II Cepheid or an ellipsoidal binary system. The remaining twenty eight variable stars found in the field of this open cluster are most probably highly obscured background red giants (OSARG, irregular). For all detected variable stars we provide their light curves, preliminary classification, discussion on the possible cluster membership, equatorial coordinates, finding charts and periods when possible.2007AcA....57..249Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AcA/57/249CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toftp://sirius.astrouw.edu.pl/ogle/ : OGLE Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AcA/57/249https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AcA/57/249http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AcA/57/249https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AcA/57/249https://vizier.iucaa.in/viz-bin/votable?-source=J/AcA/57/249http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AcA/57/249GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AcA/57/249/table2 (Positions and photometry of stars in the field of NGC 6755)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/57/249/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/57/249/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/57/249/table2?GETtext/xml+votable180.050000true286.86333334.16413890.0055555555555555566/30335https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AcA/57/249?format=asciiOpticalInfrareddefaultJ/AcA/57/249/table2Positions and photometry of stars in the field of NGC 6755recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainVmagJohnson V magnitudemagphot.mag;em.opt.VfloatV-Ic? Johnson-Cousins V-Ic colour indexmagphot.color;em.opt.V;em.opt.IfloatnullableWEBDAWebda identification numbermeta.idint