J/other/NewA/49.ivo://CDS.VizieR/J/other/NewA/49.50CDSPalma T.Minniti D.Dekany I.Claria J.J.Alonso-Garcia J.,Gramajo L.V.Ramirez Alegria S.Bonatto C.2021-08-09T08:22:01Z2017-01-27T15:43:48ZCDS support team

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

cds-question@unistra.fropen-star-clustersvariable-starsinfrared-photometryThis project is a massive near-infrared (NIR) search for variable stars in highly reddened and obscured open cluster (OC) fields projected on regions of the Galactic bulge and disk. The search is performed using photometric NIR data in the J-, H- and Ks - bands obtained from the Vista Variables in the Via Lactea (VVV) Survey. We performed in each cluster field a variability search using Stetson's variability statistics to select the variable candidates. Later, those candidates were subjected to a frequency analysis using the Generalized Lomb-Scargle and the Phase Dispersion Minimization algorithms. The number of independent observations range between 63 and 73. The newly discovered variables in this study, 157 in total in three different known OCs, are classified based on their light curve shapes, periods, amplitudes and their location in the corresponding color-magnitude (J-Ks,Ks)(J-Ks,Ks) and color-color (H-Ks,J-H)(H-Ks,J-H) diagrams. We found 5 possible Cepheid stars which, based on the period-luminosity relation, are very likely type II Cepheids located behind the bulge. Among the newly discovered variables, there are eclipsing binaries, {delta} Scuti, as well as background RR Lyrae stars. Using the new version of the Wilson & Devinney code as well as the "Physics Of Eclipsing Binaries" (PHOEBE) code, we analyzed some of the best eclipsing binaries we discovered. Our results show that these studied systems turn out to be ranging from detached to double-contact binaries, with low eccentricities and high inclinations of approximately 80{deg}. Their surface temperatures range between 3500K and 8000K.2016NewA...49...50Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/NewA/49.50CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/548/A97 : Catalogue of variable stars in open clusters (Zejda+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/NewA/49.50https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/NewA/49.50http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/NewA/49.50https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/NewA/49.50https://vizier.iucaa.in/viz-bin/votable?-source=J/other/NewA/49.50http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/NewA/49.50GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/NewA/49.50/table3 (List of variable stars found in Antalova 1)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/NewA/49.50/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/other/NewA/49.50/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/NewA/49.50/table3?GETtext/xml+votable180.050000true262.11125-31.49416670.005555555555555556Cone search capability for table J/other/NewA/49.50/table4 (List of variable stars found in ASCC 90)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/NewA/49.50/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/other/NewA/49.50/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/NewA/49.50/table4?GETtext/xml+votable180.050000true264.4852083-34.83086110.005555555555555556Cone search capability for table J/other/NewA/49.50/table5 (List of variable stars found in ESO 393-15)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/NewA/49.50/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/other/NewA/49.50/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/NewA/49.50/table5?GETtext/xml+votable180.050000true265.81075-34.2220.0055555555555555566/28718 28800 28801 28833https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/NewA/49.50?format=asciiInfrareddefaultJ/other/NewA/49.50/table3List of variable stars found in Antalova 1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVNameVariable name within the open clustermeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainDist? Distance to the cluster centerarcminpos.angDistancefloatnullablePer? Perioddtime.perioddoublenullableAmpKs total amplitudemagsrc.var.amplitudefloat<Ksmag>Mean Ks magnitudemagphot.magfloatJ-Ks? J-Ks colour indexmagphot.color;em.IR.J;em.IR.KfloatnullableH-Ks? H-Ks colour indexmagphot.color;em.IR.H;em.IR.KfloatnullableClassClassificationsrc.classcharComComments (other types/periods)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/other/NewA/49.50/table4List of variable stars found in ASCC 90recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVNameVariable name within the open clustermeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainDist? Distance to the cluster centerarcminpos.angDistancefloatnullablePer? Perioddtime.perioddoublenullableAmpKs total amplitudemagsrc.var.amplitudefloat<Ksmag>Mean Ks magnitudemagphot.magfloatJ-Ks? J-Ks colour indexmagphot.color;em.IR.J;em.IR.KfloatnullableH-Ks? H-Ks colour indexmagphot.color;em.IR.H;em.IR.KfloatnullableClassClassificationsrc.classcharComComments (other types/periods)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/other/NewA/49.50/table5List of variable stars found in ESO 393-15recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVNameVariable name within the open clustermeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainDist? Distance to the cluster centerarcminpos.angDistancefloatnullablePer? Perioddtime.perioddoublenullableAmpKs total amplitudemagsrc.var.amplitudefloat<Ksmag>Mean Ks magnitudemagphot.magfloatJ-Ks? J-Ks colour indexmagphot.color;em.IR.J;em.IR.KfloatnullableH-Ks? H-Ks colour indexmagphot.color;em.IR.H;em.IR.KfloatnullableClassClassificationsrc.classcharComComments (other types/periods)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar