J/other/BASI/40.ivo://CDS.VizieR/J/other/BASI/40.51CDSKiron Y.R.Sriram K.Vivekananda Rao P.2017-07-11T13:08:40Z2012-09-19T15:18:23ZCDS support team

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

cds-question@unistra.fropen-star-clustersvariable-starsvisible-astronomyWide-band photometryCCD photometric observations of the eclipsing contact binaries (EW type) V3 and V4 of the cluster NGC 2539 were made in the B and V bands using the 2m telescope at the IUCAA-Girawali Observatory in India. The light curves have been obtained and using the Wilson-Devinney code, the combined photometric solutions have been presented here. The photometric solutions have revealed that both V3 and V4 are W-type contact binary systems with mass ratios of 0.806 and 1.001 respectively. Revised orbital periods, absolute masses and radii of the components have been obtained.2012BASI...40...51Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/BASI/40.51CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/BASI/40.51https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/BASI/40.51http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/BASI/40.51https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/BASI/40.51https://vizier.iucaa.in/viz-bin/votable?-source=J/other/BASI/40.51http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/BASI/40.51GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/other/BASI/40.51/obsCombined table from original tablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoubleDV3Differential magnitude for V3 variable (1)magphot.mag;arith.difffloatDV4Differential magnitude for V4 variable (2)magphot.mag;arith.difffloatBand[BV] Observed bandinstr.bandpasscharJ/other/BASI/40.51/table4CCD times of light minima for the observed variables V3 and V4 of NGC 2539recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameVariable name (V3 or V4)meta.id;meta.maincharHJDHeliocentric Julian datedtime.epochdoubleMinType of Minima (I Primary II Secondary)meta.codecharENumber of the cyclemeta.idfloatO-CO-C residualsdtime;arith.diffdoubleRefReferencesmeta.refchar