J/other/NewA/48.ivo://CDS.VizieR/J/other/NewA/48.58CDSLu H.Zhang L.Han X.L.Pi Q.Wang D.2017-06-22T14:29:08Z2017-01-03T14:07:50ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsinfrared-photometryvisible-astronomyphotometryccd-photometryWe present new CCD photometric observations of V1044 Her obtained on May 22, 23 and 24, 2015. From our data, we derived five new light curve minimum times. Combining our new results with previously available CCD light minimum times, we derived an updated ephemeris and discovered that the period of this binary system exhibits an oscillation. The cyclic variation may be caused by the light-time effect via the presence of a third body or magnetic activity cycle. We calculated the corresponding period of the third body to be 14.1+/-1.4 years or magnetic cycle to be 12.2+/-0.7 years. We analyzed our new asymmetric light curves to obtain photometric solutions and starspot parameters using the Wilson and Devinney program. The final results show that V1044 Her is a contact binary system with a degree of contact factor f=3.220(+/-0.002)%.2016NewA...48...58Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/NewA/48.58CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/NewA/48.58https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/NewA/48.58http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/NewA/48.58https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/NewA/48.58https://vizier.iucaa.in/viz-bin/votable?-source=J/other/NewA/48.58http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/NewA/48.58GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfraredOpticaldefaultJ/other/NewA/48.58/table2Photometric data of V1044 Her in V and R bandsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD-V? Heliocentric Julian Date of V band observation (May 22, 2015)dtime.epochdoublenullabledVmag? Differential V band magnitudemagphot.mag;em.opt.V;arith.difffloatnullableHJD-R1? Heliocentric Julian Date of R band observation (May 23, 2015)dtime.epochdoublenullabledR1mag? Differential R band magnitudemagphot.mag;arith.difffloatnullableHJD-R2Heliocentric Julian Date of R band observation (May 24, 2015)dtime.epochdoubledR2magDifferential R band magnitudemagphot.mag;arith.difffloat