J/A+A/598/A108ivo://CDS.VizieR/J/A+A/598/A108doi:10.26093/cds/vizier.35980108CDSLaur J.Kolka I.Eenmae T.Tuvikene T.Leedjarv L.2017-11-28T09:00:00Z2017-02-08T09:57:24ZCDS support team

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

cds-question@unistra.frlate-type-starsob-starseclipsing-binary-starsvariable-starsThe stellar evolution theory of massive stars remains uncalibrated with high-precision photometric observational data mainly due to small number of luminous stars monitored from space. Automated all-sky surveys have revealed numerous variable stars but most luminous stars are often overexposed. Targeted campaigns can improve the time base of photometric data for those objects. The aim of this investigation is to study the variability of luminous stars at different time-scales in young open clusters and OB associations. We monitored 22 open clusters and associations from 2011 to 2013 using a 0.25-m telescope. Variable stars were detected by comparing the overall light-curve scatter with measurement uncertainties. Variability was analysed by the light curve feature extraction tool FATS. Periods of pulsating stars were determined using the discrete Fourier transform code SigSpec. We then classified the variable stars based on their pulsation periods and available spectral information. We obtained light curves for more than 20000 sources of which 354 were found to be variable. Amongst them we find 80 eclipsing binaries, 31 {alpha} Cyg, 13 {beta} Cep, 62 Be, 16 slowly pulsating B, 7 Cepheid, 1 {gamma} Doradus, 3 Wolf-Rayet and 63 late-type variable stars. Up to 55% of these stars are potential new discoveries as they are not present in the Variable Star Index (VSX) database. We find the cluster membership fraction for variable stars to be 13% with an upper limit of 35%.2017A&A...598A.108Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/598/A108CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/598/A108https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/598/A108http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/598/A108https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/598/A108https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/598/A108http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/598/A108GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/598/A108/table2 (Observed {beta} Cephei variables)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/598/A108/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/598/A108/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/598/A108/table2?GETtext/xml+votable180.050000true304.16833338.8991670.005555555555555556Cone search capability for table J/A+A/598/A108/table1 (Observed eclipsing binaries)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/598/A108/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/598/A108/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/598/A108/table1?GETtext/xml+votable180.050000true304.88538.7316670.005555555555555556Cone search capability for table J/A+A/598/A108/table4 (Observed Cepheid variables)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/598/A108/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/598/A108/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/598/A108/table4?GETtext/xml+votable180.050000true305.21291739.01250.005555555555555556Cone search capability for table J/A+A/598/A108/table5 (Observed {gamma} Doradus variables)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/598/A108/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/598/A108/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/598/A108/table5?GETtext/xml+votable180.050000true23.43958360.6230560.005555555555555556Cone search capability for table J/A+A/598/A108/table7 (Observed {alpha} Cyg variables)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/598/A108/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/598/A108/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/598/A108/table7?GETtext/xml+votable180.050000true305.31416737.4086110.005555555555555556Cone search capability for table J/A+A/598/A108/table8 (Observed variable Be stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/598/A108/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/598/A108/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/598/A108/table8?GETtext/xml+votable180.050000true305.3537537.380.005555555555555556Cone search capability for table J/A+A/598/A108/table9 (Observed variable late-type stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/598/A108/table9?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/598/A108/table9?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/598/A108/table9?GETtext/xml+votable180.050000true304.73958339.0038890.005555555555555556Cone search capability for table J/A+A/598/A108/table10 (Observed unclassified variable stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/598/A108/table10?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/598/A108/table10?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/598/A108/table10?GETtext/xml+votable180.050000true304.82166738.4305560.005555555555555556Cone search capability for table J/A+A/598/A108/table3 (Observed SPB variables)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/598/A108/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/598/A108/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/598/A108/table3?GETtext/xml+votable180.050000true305.85291737.2316670.005555555555555556Cone search capability for table J/A+A/598/A108/table6 (Observed WR variables)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/598/A108/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/598/A108/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/598/A108/table6?GETtext/xml+votable180.050000true304.88538.7316670.005555555555555556Cone search capability for table J/A+A/598/A108/tablea11 (Variable stars not in VSX)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/598/A108/tablea11?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/598/A108/tablea11?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/598/A108/tablea11?GETtext/xml+votable180.050000true304.82166738.4305560.0055555555555555565/818 3577 3661 6/3254-3258 3260 3307 3310 3621-3623 3632-3634 14300 14302 14320 14322 14324 14619-14620 14622-14623 14643 14692-14694 24336-24338https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/598/A108?format=asciidefaultJ/A+A/598/A108/table2Observed {beta} Cephei variablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField namemeta.id.parentcharIDInternal IDmeta.idintNameStar namemeta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainMemberCluster membershipmeta.code.membercharSPTypeMK Spectral Type (G1)src.spTypecharVmagMean magnitude (apparent) in V filtermagphot.mag;em.opt.VfloatAmpAmplitude of the light curvemagphot.magfloatPer? Period from this work (1)dtime.perioddoublenullableVSXinfoVariability type in VSX (2)meta.note;src.varcharVSXPer? Period in VSX (2)dtime.perioddoublenullableLCShow the light curvemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/598/A108/table1Observed eclipsing binariesIDInternal IDmeta.idintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField namemeta.id.parentcharNameStar namemeta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainMemberCluster membershipmeta.code.membercharSPTypeMK Spectral Type (G1)src.spTypecharVmagMean magnitude (apparent) in V filtermagphot.mag;em.opt.VfloatAmpAmplitude of the light curvemagphot.magfloatPer? Period from this work (1)dtime.perioddoublenullableVSXinfoVariability type in VSX (2)meta.note;src.varcharVSXPer? Period in VSX (2)dtime.perioddoublenullableLCShow the light curvemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/598/A108/table4Observed Cepheid variablesDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField namemeta.id.parentcharIDInternal IDmeta.idintNameStar namemeta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainMemberCluster membershipmeta.code.membercharSPTypeMK Spectral Type (G1)src.spTypecharVmagMean magnitude (apparent) in V filtermagphot.mag;em.opt.VfloatAmpAmplitude of the light curvemagphot.magfloatPer? Period from this work (1)dtime.perioddoublenullableVSXinfoVariability type in VSX (2)meta.note;src.varcharVSXPer? Period in VSX (2)dtime.perioddoublenullableLCShow the light curvemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/598/A108/table5Observed {gamma} Doradus variablesNameStar namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField namemeta.id.parentcharIDInternal IDmeta.idintRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainMemberCluster membershipmeta.code.membercharSPTypeMK Spectral Type (G1)src.spTypecharVmagMean magnitude (apparent) in V filtermagphot.mag;em.opt.VfloatAmpAmplitude of the light curvemagphot.magfloatPer? Period from this work (1)dtime.perioddoublenullableVSXinfoVariability type in VSX (2)meta.note;src.varcharVSXPer? Period in VSX (2)dtime.perioddoublenullableLCShow the light curvemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/598/A108/table7Observed {alpha} Cyg variablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField namemeta.id.parentcharIDInternal IDmeta.idintNameStar namemeta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainMemberCluster membershipmeta.code.membercharSPTypeMK Spectral Type (G1)src.spTypecharVmagMean magnitude (apparent) in V filtermagphot.mag;em.opt.VfloatAmpAmplitude of the light curvemagphot.magfloatPer? Period from this work (1)dtime.perioddoublenullableVSXinfoVariability type in VSX (2)meta.note;src.varcharVSXPer? Period in VSX (2)dtime.perioddoublenullableLCShow the light curvemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/598/A108/table8Observed variable Be starsIDInternal IDmeta.idintNameStar namemeta.id;meta.maincharFieldField namemeta.id.parentcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainMemberCluster membershipmeta.code.membercharSPTypeMK Spectral Type (G1)src.spTypecharVmagMean magnitude (apparent) in V filtermagphot.mag;em.opt.VfloatAmpAmplitude of the light curvemagphot.magfloatPer? Period from this work (1)dtime.perioddoublenullableVSXinfoVariability type in VSX (2)meta.note;src.varcharVSXPer? Period in VSX (2)dtime.perioddoublenullableLCShow the light curvemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/598/A108/table9Observed variable late-type starsIDInternal IDmeta.idintNameStar namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField namemeta.id.parentcharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainMemberCluster membershipmeta.code.membercharSPTypeMK Spectral Type (G1)src.spTypecharVmagMean magnitude (apparent) in V filtermagphot.mag;em.opt.VfloatAmpAmplitude of the light curvemagphot.magfloatPer? Period from this work (1)dtime.perioddoublenullableVSXinfoVariability type in VSX (2)meta.note;src.varcharVSXPer? Period in VSX (2)dtime.perioddoublenullableLCShow the light curvemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/598/A108/table10Observed unclassified variable starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField namemeta.id.parentcharIDInternal IDmeta.idintNameStar namemeta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainMemberCluster membershipmeta.code.membercharSPTypeMK Spectral Type (G1)src.spTypecharVmagMean magnitude (apparent) in V filtermagphot.mag;em.opt.VfloatAmpAmplitude of the light curvemagphot.magfloatPer? Period from this work (1)dtime.perioddoublenullableVSXinfoVariability type in VSX (2)meta.note;src.varcharVSXPer? Period in VSX (2)dtime.perioddoublenullableLCShow the light curvemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/598/A108/table3Observed SPB variablesMemberCluster membershipmeta.code.membercharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField namemeta.id.parentcharIDInternal IDmeta.idintNameStar namemeta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainSPTypeMK Spectral Type (G1)src.spTypecharVmagMean magnitude (apparent) in V filtermagphot.mag;em.opt.VfloatAmpAmplitude of the light curvemagphot.magfloatPer? Period from this work (1)dtime.perioddoublenullableVSXinfoVariability type in VSX (2)meta.note;src.varcharVSXPer? Period in VSX (2)dtime.perioddoublenullableLCShow the light curvemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/598/A108/table6Observed WR variablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField namemeta.id.parentcharIDInternal IDmeta.idintNameStar namemeta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainMemberCluster membershipmeta.code.membercharSPTypeMK Spectral Type (G1)src.spTypecharVmagMean magnitude (apparent) in V filtermagphot.mag;em.opt.VfloatAmpAmplitude of the light curvemagphot.magfloatPer? Period from this work (1)dtime.perioddoublenullableVSXinfoVariability type in VSX (2)meta.note;src.varcharVSXPer? Period in VSX (2)dtime.perioddoublenullableLCShow the light curvemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/598/A108/tablea11Variable stars not in VSXrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField namemeta.id.parentcharIDInternal IDmeta.idintNameStar namemeta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainMemberCluster membershipmeta.code.membercharSPTypeMK Spectral Type (G1)src.spTypecharVmagMean magnitude (apparent) in V filtermagphot.mag;em.opt.VfloatAmpAmplitude of the light curvemagphot.magfloatPer? Period from this work (1)dtime.perioddoublenullableTypeVariability type (2)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/598/A108/table11Light curves of variable starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField namemeta.id.parentcharIDInternal IDmeta.id;meta.mainintObs.dateHeliocentric Julian date (HJD-2400000)dtime.epoch;pos.heliocentricdoublemagDifferential magnitude in V passbandmagphot.mag;arith.difffloate_magUncertainty in magnitudemagstat.error;phot.magfloat