J/AcA/72/77ivo://CDS.VizieR/J/AcA/72/77doi:10.26093/cds/vizier.120720077CDSSanjayan S.Baran A.S.Nemeth P.Kinemuchi K.Ostrowski J.Sahoo S.K.2025-09-25T20:16:57Z2023-06-19T14:13:22ZCDS 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 9' from the central region of NGC6791. We classified the variable stars based on the variability type and we established their cluster membership based on the available Gaia Early Data Release 3 astrometry, by means of the Bayesian Gaussian mixture models. In total we found 278 variable objects, among which 17 binaries, 45 pulsators, 62 rotational and five unclassified variables are cluster members. The remaining 28 binaries, 25 pulsators, 83 rotational, four unclassified and nine unidentified variables are either not members or their membership is not established. In the case of eclipsing binaries we calculated the mid-times of eclipses and derived ephemerides. We searched for eclipse timing variation by means of the observed minus calculated diagrams. Only three objects show significant orbital period variation. Independently of a recently published report, we found 119 new variables. We used isochrones calculated within the MIST project and derived the age (8.91Gyr), average distance (4134pc) and iron content [Fe/H] (0.26-0.28), of NGC 6791. Using the cluster members with membership probabilities greater than 0.9, we calculated the distance to the cluster of 4123(31) pc, which agrees with the result from our isochrone fitting.2022AcA....72...77Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AcA/72/77CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)J/AcA/72/267 : Variable star population in NGC 6819 (Sanjayan+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AcA/72/77https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AcA/72/77http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AcA/72/77https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AcA/72/77https://vizier.iucaa.in/viz-bin/votable?-source=J/AcA/72/77http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AcA/72/77GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AcA/72/77/table1 (List of binary stars that are cluster members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/77/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/77/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/77/table1?GETtext/xml+votable180.050000true290.141742237.74135420.005555555555555556Cone search capability for table J/AcA/72/77/table2 (List of cluster members showing pulsations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/77/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/77/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/77/table2?GETtext/xml+votable180.050000true290.294601937.75871780.005555555555555556Cone search capability for table J/AcA/72/77/table3 (List of cluster members showing rotational variability)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/77/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/77/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/77/table3?GETtext/xml+votable180.050000true290.223458637.67706030.005555555555555556Cone search capability for table J/AcA/72/77/table4 (List of cluster members with unclassified variability)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/77/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/77/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/77/table4?GETtext/xml+votable180.050000true290.249714237.74582440.005555555555555556Cone search capability for table J/AcA/72/77/table5 (List of binary stars that are not cluster members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/77/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/77/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/77/table5?GETtext/xml+votable180.050000true290.351379737.77368170.005555555555555556Cone search capability for table J/AcA/72/77/table6 (List of pulsators that are not cluster members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/77/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/77/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/77/table6?GETtext/xml+votable180.050000true290.251958937.6823450.005555555555555556Cone search capability for table J/AcA/72/77/table7 (List of rotational variables that are not cluster members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/77/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/77/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/77/table7?GETtext/xml+votable180.050000true290.235890837.67541640.005555555555555556Cone search capability for table J/AcA/72/77/table8 (List of unclassified variables that are not cluster members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/77/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/77/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/77/table8?GETtext/xml+votable180.050000true290.319036737.72844080.005555555555555556Cone search capability for table J/AcA/72/77/table9 (List of equatorial coordinates that are associated with superstamp pixels showing signal in their amplitude spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/72/77/table9?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/72/77/table9?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/72/77/table9?GETtext/xml+votable180.050000true290.215537.79594440.0055555555555555566/14573 145751.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AcA/72/77?format=asciiOpticaldefaultJ/AcA/72/77/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.errordoublenullableT0? 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.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_RAPositions from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainJ/AcA/72/77/table2List of cluster members showing pulsationse_[Fe/H]? Metallicity errorstat.error;phys.abund.FefloatnullableRefSource of the spectra (G4)meta.bibchar_RAPositions from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[1234] 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.heliocentricfloatnullablee_RV? Radial velocity errorkm/sstat.errorfloatnullable[Fe/H]? Metallicityphys.abund.ZfloatnullableJ/AcA/72/77/table3List of cluster members showing rotational variabilityrecnoRecord 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.notecharPorbOrbital perioddtime.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_RAPositions from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainJ/AcA/72/77/table4List of cluster members with unclassified variabilityrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaEDR3Gaia EDR3 identifiermeta.id;meta.mainKICKIC identifiermeta.idintn_KICNote on KIC (G2)meta.notecharPerPerioddtime.periodfloatGmagGaia G magnitudemagphot.mag;em.optfloatCMDPosition in the CMD (G3)meta.codechar_RAPositions from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainJ/AcA/72/77/table5List of binary stars that are not cluster membersTeff? Effective temperatureKphys.temperature.effectiveintnullableRefSource of the spectra (G4)meta.bibchar_RAPositions from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainrecnoRecord 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.notecharPorbOrbital perioddtime.perioddoublee_Porb? Orbital period errordstat.errordoublenullableT0? Time of minimum brightnessdtime.epochdoublenullablee_T0? Time of minimum brightness errordstat.errordoublenullableGmagGaia G magnitudemagphot.mag;em.optfloate_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]? Metallicitystat.error;phys.abund.FefloatnullableJ/AcA/72/77/table6List of pulsators that are not cluster membersrecnoRecord 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_RAPositions from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainJ/AcA/72/77/table7List of rotational variables that are not cluster membersrecnoRecord 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.periodfloatGmagGaia 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_RAPositions from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainJ/AcA/72/77/table8List of unclassified variables that are not cluster membersPerPerioddtime.periodfloatlogg? Surface gravitylog(cm.s**-2)phys.gravityfloatnullablen_KICNote on KIC (G2)meta.notecharrecnoRecord 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.notecharKICKIC identifiermeta.idintGmagGaia G magnitudemagphot.mag;em.optfloatTeff? Effective temperatureKphys.temperature.effectiveintnullablee_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablee_logg? Surface gravity errorlog(cm.s**-2)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_RAPositions from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainJ/AcA/72/77/table9List of equatorial coordinates that are associated with 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