J/AcA/72/267ivo://CDS.VizieR/J/AcA/72/267doi:10.26093/cds/vizier.120720267CDSSanjayan S.Baran A.S.Nemeth P.Kinemuchi K.2025-09-25T20:16:54Z2023-06-19T14:09:27ZCDS support team

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

cds-question@unistra.fropen-star-clustersvariable-starsphotometryvisible-astronomyradial-velocityeffective-temperaturemetallicityWe present the list of variable stars we found in the Kepler superstamp data covering approximately nine arcminutes from the central region of NGC 6819. This is a continuation of our work presented by Sanjayan et al. (2022AcA....72...77S, Cat. J/AcA/72/77). We classified the variable stars based on the variability type and we established their cluster membership based on the available Gaia Data Release 3 astrometry. Our search revealed 385 variable stars but only 128 were found to be cluster members. In the case of eclipsing and contact binaries we calculated the mid-times of eclipses and derived ephemerides. We searched for eclipse timing variation using the observed minus calculated diagrams. Only five objects show significant orbital period variation. We used isochrones calculated within theMESA Isochrones and Stellar Tracks project and derived the average age (2.54 Gyr), average distance (2.3 kpc) and iron content [Fe/H]=-0.01(2), of NGC 6819. We confirm this distance by the one derived from Gaia astrometry of the cluster members with membership probabilities greater than 0.9.2022AcA....72..267Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AcA/72/267CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)J/AcA/72/77 : Variable star population in NGC 6791 (Sanjayan+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AcA/72/267https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AcA/72/267http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AcA/72/267https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AcA/72/267https://vizier.iucaa.in/viz-bin/votable?-source=J/AcA/72/267http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AcA/72/267GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AcA/72/267/table1 (List of binary stars that are cluster members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/267/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/267/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/267/table1?GETtext/xml+votable180.050000true295.323868640.1972050.005555555555555556Cone search capability for table J/AcA/72/267/table2 (List of cluster members showing pulsations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/267/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/267/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/267/table2?GETtext/xml+votable180.050000true295.206875640.24200610.005555555555555556Cone search capability for table J/AcA/72/267/table3 (List of cluster members showing rotational variability)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/267/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/267/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/267/table3?GETtext/xml+votable180.050000true295.230931440.29108890.005555555555555556Cone search capability for table J/AcA/72/267/table4 (List of cluster members with unclassified variability)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/267/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/267/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/267/table4?GETtext/xml+votable180.050000true295.216410840.23257360.005555555555555556Cone search capability for table J/AcA/72/267/table5 (List of binary stars in the field that are not cluster members or no memberships derived)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/267/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/267/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/267/table5?GETtext/xml+votable180.050000true295.277468140.21114030.005555555555555556Cone search capability for table J/AcA/72/267/table6 (List of pulsators in the field that are not cluster members or no memberships derived)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/267/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/267/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/267/table6?GETtext/xml+votable180.050000true295.225791940.30444440.005555555555555556Cone search capability for table J/AcA/72/267/table7 (List of rotational variables that are not cluster members or no memberships derived)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/267/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/267/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/267/table7?GETtext/xml+votable180.050000true295.201864440.27197190.005555555555555556Cone search capability for table J/AcA/72/267/table8 (List of unclassified variables that are not identified as cluster members in our analysis)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/267/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/267/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/267/table8?GETtext/xml+votable180.050000true295.201461440.25466690.005555555555555556Cone search capability for table J/AcA/72/267/table9 (List of equatorial coordinates that are associated with the superstamp pixels showing signal in their amplitude spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/267/table9?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/267/table9?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/267/table9?GETtext/xml+votable180.050000true295.336541740.28854720.0055555555555555565/3688 6/1.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AcA/72/267?format=asciiOpticaldefaultJ/AcA/72/267/table1List of binary stars that are cluster membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[eaco] Type (G1)meta.codecharGaiaEDR3Gaia EDR3 identifiermeta.id;meta.mainn_GaiaEDR3[*] * for newly detected variablesmeta.notecharKICKIC identifiermeta.idintn_KICNote on KIC (G2)meta.notecharPorbOrbital perioddtime.perioddoublee_Porb? Orbital period errordstat.errordoublenullablen_Porb[e] Note on Porb (G5)meta.notecharT0? Time of minimum brightness (BJD)dtime.epochdoublenullablee_T0? Time of minimum brightness errordstat.errordoublenullableGmagGaia G magnitudemagphot.mag;em.optfloatCMDPosition in the CMD (G3)meta.codecharHRDPosition in the Teff, logg diagram (G3)meta.codecharTeff? Effective temperatureKphys.temperature.effectiveintnullablee_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablelogg? Surface gravitylog(cm.s**-2)phys.gravityfloatnullablee_logg? Surface gravity errorlog(cm.s**-2)stat.errorfloatnullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricintnullablee_RV? Radial velocity errorkm/sstat.errorintnullable[Fe/H]? Metallicityphys.abund.Zfloatnullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.FefloatnullableRefSource of the spectra (G4)meta.bibchar_RAPositinos from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositinos from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainJ/AcA/72/267/table2List of cluster members showing pulsationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[1245] Type (G1)meta.codecharGaiaEDR3Gaia EDR3 identifiermeta.id;meta.mainn_GaiaEDR3[*] * for newly detected variablesmeta.notecharKICKIC identifiermeta.idintn_KICNote on KIC (G2)meta.notecharGmagGaia G magnitudemagphot.mag;em.optfloatCMDPosition in the CMD (G3)meta.codecharHRDPosition in the Teff, logg diagram (G3)meta.codecharTeff? Effective temperatureKphys.temperature.effectiveintnullablee_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablelogg? Surface gravitylog(cm.s**-2)phys.gravityfloatnullablee_logg? Surface gravity errorlog(cm.s**-2)stat.errorfloatnullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricdoublenullablee_RV? Radial velocity errorkm/sstat.errorfloatnullable[Fe/H]? Metallicityphys.abund.Zfloatnullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.FefloatnullableRefSource of the spectra (G4)meta.bibchar_RAPositinos from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositinos from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainJ/AcA/72/267/table3List of cluster members showing rotational variabilityGmagGaia G magnitudemagphot.mag;em.optfloatCMDPosition in the CMD (G3)meta.codecharHRDPosition in the Teff, logg diagram (G3)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaEDR3Gaia EDR3 identifiermeta.id;meta.mainn_GaiaEDR3[*] * for newly detected variablesmeta.notecharKIC? KIC identifiermeta.idintnullablen_KICNote on KIC (G2)meta.notecharPerPerioddtime.periodfloatTeff? Effective temperatureKphys.temperature.effectiveintnullablee_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablelogg? Surface gravitylog(cm.s**-1)phys.gravityfloatnullablee_logg? Surface gravity errorlog(cm.s**-1)stat.errorfloatnullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_RV? Radial velocity errorkm/sstat.errorfloatnullable[Fe/H]? Metallicityphys.abund.Zfloatnullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.FefloatnullableRefSource of the spectra (G4)meta.bibchar_RAPositinos from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositinos from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainJ/AcA/72/267/table4List of cluster members with unclassified variability_RAPositinos from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaEDR3Gaia EDR3 identifiermeta.id;meta.mainn_GaiaEDR3[*] * for newly detected variablesmeta.notecharKIC? KIC identifiermeta.idintnullablen_KICNote on KIC (G2)meta.notecharPerPerioddtime.periodfloatGmagGaia G magnitudemagphot.mag;em.optfloatCMDPosition in the CMD (G3)meta.codecharHRDPosition in the Teff, logg diagram (G3)meta.codecharTeff? Effective temperatureKphys.temperature.effectiveintnullablee_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablelogg? Surface gravitylog(cm.s**-1)phys.gravityfloatnullablee_logg? Surface gravity errorlog(cm.s**-1)stat.errorfloatnullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_RV? Radial velocity errorkm/sstat.errorfloatnullable[Fe/H]? Metallicityphys.abund.Zfloatnullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.FefloatnullableRefSource of the spectra (G4)meta.bibchar_DEPositinos from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainJ/AcA/72/267/table5List of binary stars in the field that are not cluster members or no memberships derivedGmagGaia G magnitudemagphot.mag;em.optfloate_Porb? Orbital period errordstat.errordoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[eaco] Type (G1)meta.codecharGaiaEDR3Gaia EDR3 identifiermeta.id;meta.mainn_GaiaEDR3[*I] * for newly detected variablesmeta.notecharKIC? KIC identifiermeta.idintnullablen_KICNote on KIC (G2)meta.notecharPorb? Orbital perioddtime.perioddoublenullablen_Porb[es] Note on Porb (G5)meta.notecharT0? Time of minimum brightnessdtime.epochdoublenullablee_T0? Time of minimum brightness errordstat.errordoublenullableTeff? Effective temperatureKphys.temperature.effectiveintnullablee_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablelogg? Surface gravitylog(cm.s**-1)phys.gravityfloatnullablee_logg? Surface gravity errorlog(cm.s**-1)stat.errorfloatnullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricintnullablee_RV? Radial velocity errorkm/sstat.errorintnullable[Fe/H]? Metallicityphys.abund.Zfloatnullablee_[Fe/H]? Metallicitystat.error;phys.abund.FefloatnullableRefSource of the spectra (G4)meta.bibchar_RAPositinos from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositinos from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainJ/AcA/72/267/table6List of pulsators in the field that are not cluster members or no memberships derivedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[123456] Type (G1)meta.codecharGaiaEDR3Gaia EDR3 identifiermeta.id;meta.mainn_GaiaEDR3[*] * for newly detected variablesmeta.notecharKICKIC identifiermeta.idintn_KICNote on KIC (G2)meta.notecharGmagGaia G magnitudemagphot.mag;em.optfloatTeff? Effective temperatureKphys.temperature.effectiveintnullablee_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablelogg? Surface gravitylog(cm.s**-2)phys.gravityfloatnullablee_logg? Surface gravity errorlog(cm.s**-2)stat.errorfloatnullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricdoublenullablee_RV? Radial velocity errorkm/sstat.errorfloatnullable[Fe/H]? Metallicityphys.abund.Zfloatnullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.FefloatnullableRefSource of the spectra (G4)meta.bibchar_RAPositinos from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositinos from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainJ/AcA/72/267/table7List of rotational variables that are not cluster members or no memberships derivede_RV? Radial velocity errorkm/sstat.errorfloatnullable[Fe/H]? Metallicityphys.abund.Zfloatnullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.FefloatnullableRefSource of the spectra (G4)meta.bibchar_RAPositinos from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositinos from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaEDR3Gaia EDR3 identifiermeta.id;meta.mainn_GaiaEDR3[*iI] * for newly detected variablesmeta.notecharKIC? KIC identifiermeta.idintnullablen_KICNote on KIC (G2)meta.notecharPerPerioddtime.periodfloatGmag? Gaia G magnitudemagphot.mag;em.optfloatnullableTeff? Effective temperatureKphys.temperature.effectiveintnullablee_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablelogg? Surface gravitylog(cm.s**-2)phys.gravityfloatnullablee_logg? Surface gravity errorlog(cm.s**-2)stat.errorfloatnullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricfloatnullableJ/AcA/72/267/table8List of unclassified variables that are not identified as cluster members in our analysisrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaEDR3Gaia EDR3 identifiermeta.id;meta.mainn_GaiaEDR3[*i] * for newly detected variablesmeta.notecharKIC? KIC identifiermeta.idintnullablen_KICNote on KIC (G2)meta.notecharPerPerioddtime.periodfloatGmagGaia G magnitudemagphot.mag;em.optfloat_RAPositinos from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositinos from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainJ/AcA/72/267/table9List of equatorial coordinates that are associated with the superstamp pixels showing signal in their amplitude spectraTypeTypemeta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNew[*] * for new variablemeta.codecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainPerPerioddtime.periodfloatNote[*] Note (1)meta.notechar