J/other/NewA/36.ivo://CDS.VizieR/J/other/NewA/36.50CDSKriwattanawong W.Poojon P.2017-06-30T05:48:31Z2015-08-24T15:05:20ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsinfrared-photometryvisible-astronomyWide-band photometryWe present a photometric study of a weak-contact binary V873 Per. New observations in BVR filter bands showed asymmetric light curves to be a negative type of the O'Connell effect, which can be described by magnetic activity of a cool spot on the more massive component. Our photometric solutions showed that V873 Per is a W-type with a mass ratio of q=2.504(+/-0.0029), confirming the results of Samec et al. (2009IBVS.5901....1S). The derived contact degree was found to be f=18.10%(+/-1.36%). Moreover, our analysis found the cyclic variation with the period of about 4yr that could be due to existence of the third companion in the system or the mechanism of magnetic activity cycle in the binary. While available data indicated that the long-term orbital period tends to be stable rather than decreasing.2015NewA...36...50Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/NewA/36.50CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/NewA/36.50https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/NewA/36.50http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/NewA/36.50https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/NewA/36.50https://vizier.iucaa.in/viz-bin/votable?-source=J/other/NewA/36.50http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/NewA/36.50GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/other/NewA/36.50/table4New CCD photometric observations in BVR filter bands for V873 PerrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD-BHeliocentric Julian date of B band observation (HJD-2455890)dtime.epochfloatdBmagDifferential B band magnitudemagphot.mag;em.opt.B;arith.difffloatHJD-VHeliocentric Julian date of V band observation (HJD-2455890)dtime.epochfloatdVmagDifferential V band magnitudemagphot.mag;em.opt.V;arith.difffloatHJD-RHeliocentric Julian date of R band observation (HJD-2455890)dtime.epochfloatdRmagDifferential R band magnitudemagphot.mag;em.opt.R;arith.difffloat