J/A+A/612/A99ivo://CDS.VizieR/J/A+A/612/A99doi:10.26093/cds/vizier.36120099CDSRandich S.Tognelli E.Jackson R.Jeffries R.D.Degl'Innocenti S.,Pancino E.Re Fiorentin P.Spagna A.Sacco G.Bragaglia A.,Magrini L.Prada Moroni P.G.Alfaro E.Franciosini E.Morbidelli L.,Roccatagliata V.Bouy H.Bravi L.Jimenez-Esteban F.M.Jordi C.,Zari E.Tautvaisiene G.Drazdauskas A.Mikolaitis S.Gilmore G.,Feltzing S.Vallenari A.Bensby T.Koposov S.Korn A.Lanzafame A.,Smiljanic R.Bayo A.Carraro G.Costado M.T.Heiter U.Hourihane A.,Jofre P.Lewis J.Monaco L.Prisinzano L.Sbordone L.Sousa S.G.,Worley C.C.Zaggia S. (Gaia-ESO collaboration)2020-04-06T11:10:28Z2018-07-04T15:07:08ZCDS support team

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

cds-question@unistra.fropen-star-clustersmetallicityeffective-temperatureline-intensitiesradial-velocityspectroscopyDetermination and calibration of the ages of stars, which heavily rely on stellar evolutionary models, are very challenging, while representing a crucial aspect in many astrophysical areas. We describe the methodologies that, taking advantage of Gaia-DR1 and the Gaia-ESO Survey data, enable the comparison of observed open star cluster sequences with stellar evolutionary models. The final, long-term goal is the exploitation of open clusters as age calibrators. We perform a homogeneous analysis of eight open clusters using the Gaia-DR1 TGAS catalogue for bright members and information from the Gaia-ESO Survey for fainter stars. Cluster membership probabilities for the Gaia-ESO Survey targets are derived based on several spectroscopic tracers. The Gaia-ESO Survey also provides the cluster chemical composition. We obtain cluster parallaxes using two methods. The first one relies on the astrometric selection of a sample of bona fide members, while the other one fits the parallax distribution of a larger sample of TGAS sources. Ages and reddening values are recovered through a Bayesian analysis using the 2MASS magnitudes and three sets of standard models. Lithium depletion boundary (LDB) ages are also determined using literature observations and the same models employed for the Bayesian analysis. For all but one cluster, parallaxes derived by us agree with those presented in Gaia Collaboration (2017A&A...601A..19G, Cat. J/A+A/601/A19), while a discrepancy is found for NGC 2516; we provide evidence supporting our own determination. Inferred cluster ages are robust against models and are generally consistent with literature values. The systematic parallax errors inherent in the Gaia DR1 data presently limit the precision of our results. Nevertheless, we have been able to place these eight clusters onto the same age scale for the first time, with good agreement between isochronal and LDB ages where there is overlap. Our approach appears promising and demonstrates the potential of combining Gaia and ground-based spectroscopic datasets.2018A&A...612A..99Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/612/A99CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/337 : Gaia DR1 (Gaia Collaboration, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/612/A99https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/612/A99http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/612/A99https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/612/A99https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/612/A99http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/612/A99GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/612/A99/ic2391 (Parameters for IC2391)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/612/A99/ic2391?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/612/A99/ic2391?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/612/A99/ic2391?GETtext/xml+votable180.050000true128.939625-53.25672220.005555555555555556Cone search capability for table J/A+A/612/A99/ic2602 (Parameters for IC2602)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/612/A99/ic2602?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/612/A99/ic2602?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/612/A99/ic2602?GETtext/xml+votable180.050000true157.1561667-64.75222220.005555555555555556Cone search capability for table J/A+A/612/A99/ic4665 (Parameters for IC4665)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/612/A99/ic4665?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/612/A99/ic4665?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/612/A99/ic4665?GETtext/xml+votable180.050000true266.11229175.90144440.005555555555555556Cone search capability for table J/A+A/612/A99/ngc2451 (Parameters for NGC2451)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/612/A99/ngc2451?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/612/A99/ngc2451?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/612/A99/ngc2451?GETtext/xml+votable180.050000true114.3085833-38.73297220.005555555555555556Cone search capability for table J/A+A/612/A99/ngc2516 (Parameters for NGC2516)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/612/A99/ngc2516?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/612/A99/ngc2516?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/612/A99/ngc2516?GETtext/xml+votable180.050000true118.548625-60.80002780.005555555555555556Cone search capability for table J/A+A/612/A99/ngc2547 (Parameters for NGC2547)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/612/A99/ngc2547?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/612/A99/ngc2547?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/612/A99/ngc2547?GETtext/xml+votable180.050000true121.9384167-49.20597220.005555555555555556Cone search capability for table J/A+A/612/A99/ngc6633 (Parameters for NGC6633)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/612/A99/ngc6633?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/612/A99/ngc6633?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/612/A99/ngc6633?GETtext/xml+votable180.050000true276.59745836.41819440.0055555555555555565/9307 9329 9398 9838 9924 6/31785 31787-31788 31790 31809 31812 37225 37227 37240-37242 37313 37586-37587 37785 37787-37788 37790 37809 37812 39181 39183 39192 39194 39358 39685https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/612/A99?format=asciidefaultJ/A+A/612/A99/ic2391Parameters for IC2391ClusterCluster namemeta.id.parentcharInstIntrument XXmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCNameStar ID (HHMMSSss+DDMMSSs)meta.id;meta.maincharTeffEffective temperatureKphys.temperature.effectiveinte_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablelogg? 10-logarithm surface gravitylog(cm.s**-2)phys.gravitydoublenullablee_logg? 10-logarithm surface gravity errorlog(cm.s**-2)stat.errordoublenullable[Fe/H]? Metallicityphys.abund.Zdoublenullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.Fedoublenullablel_EWLi[<] Upper limit flag on EWLimeta.code.errorcharEWLi? Lithium line equivalent widthlog(0.1pm)spect.line.eqWidthdoublenullablee_EWLi? Lithium line equivalent width errorlog(0.1pm)stat.errordoublenullablef_EWLi[0/3]? Flag for lithium line equivalent width (1)meta.codeintnullableGamma? Gamma indexmeta.code;spect.index;em.gammadoublenullablee_Gamma? Gamma index errorstat.errordoublenullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricdoublenullablee_RV? Radial velocity errorkm/sstat.errordoublenullableMembPA? Membership probability: population Astat.probabilityfloatnullableMembPB? Membership probability: population Bstat.probabilityfloatnullableIDSequential ID numbermeta.idintSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from CName (right ascension part)degpos.eq.ra;meta.main_DEPositions from CName (declination part)degpos.eq.dec;meta.mainJ/A+A/612/A99/ic2602Parameters for IC2602recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCNameStar ID (HHMMSSss+DDMMSSs)meta.id;meta.maincharClusterCluster namemeta.id.parentcharInstIntrument XXmeta.notecharTeffEffective temperatureKphys.temperature.effectiveinte_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablelogg? 10-logarithm surface gravitylog(cm.s**-2)phys.gravitydoublenullablee_logg? 10-logarithm surface gravity errorlog(cm.s**-2)stat.errordoublenullable[Fe/H]? Metallicityphys.abund.Zdoublenullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.Fedoublenullablel_EWLi[<] Upper limit flag on EWLimeta.code.errorcharEWLi? Lithium line equivalent widthlog(0.1pm)spect.line.eqWidthdoublenullablee_EWLi? Lithium line equivalent width errorlog(0.1pm)stat.errordoublenullablef_EWLi[0/3]? Flag for lithium line equivalent width (1)meta.codeintnullableGamma? Gamma indexmeta.code;spect.index;em.gammadoublenullablee_Gamma? Gamma index errorstat.errordoublenullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricdoublenullablee_RV? Radial velocity errorkm/sstat.errordoublenullableMembPA? Membership probability: population Astat.probabilityfloatnullableMembPB? Membership probability: population Bstat.probabilityfloatnullableIDSequential ID numbermeta.idintSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from CName (right ascension part)degpos.eq.ra;meta.main_DEPositions from CName (declination part)degpos.eq.dec;meta.mainJ/A+A/612/A99/ic4665Parameters for IC4665CNameStar ID (HHMMSSss+DDMMSSs)meta.id;meta.maincharGamma? Gamma indexmeta.code;spect.index;em.gammadoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id.parentcharInstIntrument XXmeta.notecharTeffEffective temperatureKphys.temperature.effectiveinte_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablelogg? 10-logarithm surface gravitylog(cm.s**-2)phys.gravitydoublenullablee_logg? 10-logarithm surface gravity errorlog(cm.s**-2)stat.errordoublenullable[Fe/H]? Metallicityphys.abund.Zdoublenullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.Fedoublenullablel_EWLi[<] Upper limit flag on EWLimeta.code.errorcharEWLi? Lithium line equivalent widthlog(0.1pm)spect.line.eqWidthdoublenullablee_EWLi? Lithium line equivalent width errorlog(0.1pm)stat.errordoublenullablef_EWLi[0/3]? Flag for lithium line equivalent width (1)meta.codeintnullablee_Gamma? Gamma index errorstat.errordoublenullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricdoublenullablee_RV? Radial velocity errorkm/sstat.errordoublenullableMembPA? Membership probability: population Astat.probabilityfloatnullableMembPB? Membership probability: population Bstat.probabilityfloatnullableIDSequential ID numbermeta.idintSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from CName (right ascension part)degpos.eq.ra;meta.main_DEPositions from CName (declination part)degpos.eq.dec;meta.mainJ/A+A/612/A99/ngc2451Parameters for NGC2451Gamma? Gamma indexmeta.code;spect.index;em.gammadoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCNameStar ID (HHMMSSss+DDMMSSs)meta.id;meta.maincharClusterCluster namemeta.id.parentcharInstIntrument XXmeta.notecharTeffEffective temperatureKphys.temperature.effectiveinte_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablelogg? 10-logarithm surface gravitylog(cm.s**-2)phys.gravitydoublenullablee_logg? 10-logarithm surface gravity errorlog(cm.s**-2)stat.errordoublenullable[Fe/H]? Metallicityphys.abund.Zdoublenullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.Fedoublenullablel_EWLi[<] Upper limit flag on EWLimeta.code.errorcharEWLi? Lithium line equivalent widthlog(0.1pm)spect.line.eqWidthdoublenullablee_EWLi? Lithium line equivalent width errorlog(0.1pm)stat.errordoublenullablef_EWLi[0/3]? Flag for lithium line equivalent width (1)meta.codeintnullablee_Gamma? Gamma index errorstat.errordoublenullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricdoublenullablee_RV? Radial velocity errorkm/sstat.errordoublenullableMembPA? Membership probability: population Astat.probabilityfloatnullableMembPB? Membership probability: population Bstat.probabilityfloatnullableIDSequential ID numbermeta.idintSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from CName (right ascension part)degpos.eq.ra;meta.main_DEPositions from CName (declination part)degpos.eq.dec;meta.mainJ/A+A/612/A99/ngc2516Parameters for NGC2516recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCNameStar ID (HHMMSSss+DDMMSSs)meta.id;meta.maincharClusterCluster namemeta.id.parentcharInstIntrument XXmeta.notecharTeffEffective temperatureKphys.temperature.effectiveinte_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablelogg? 10-logarithm surface gravitylog(cm.s**-2)phys.gravitydoublenullablee_logg? 10-logarithm surface gravity errorlog(cm.s**-2)stat.errordoublenullable[Fe/H]? Metallicityphys.abund.Zdoublenullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.Fedoublenullablel_EWLi[<] Upper limit flag on EWLimeta.code.errorcharEWLi? Lithium line equivalent widthlog(0.1pm)spect.line.eqWidthdoublenullablee_EWLi? Lithium line equivalent width errorlog(0.1pm)stat.errordoublenullablef_EWLi[0/3]? Flag for lithium line equivalent width (1)meta.codeintnullableGamma? Gamma indexmeta.code;spect.index;em.gammadoublenullablee_Gamma? Gamma index errorstat.errordoublenullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricdoublenullablee_RV? Radial velocity errorkm/sstat.errordoublenullableMembPA? Membership probability: population Astat.probabilityfloatnullableMembPB? Membership probability: population Bstat.probabilityfloatnullableIDSequential ID numbermeta.idintSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from CName (right ascension part)degpos.eq.ra;meta.main_DEPositions from CName (declination part)degpos.eq.dec;meta.mainJ/A+A/612/A99/ngc2547Parameters for NGC2547e_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCNameStar ID (HHMMSSss+DDMMSSs)meta.id;meta.maincharClusterCluster namemeta.id.parentcharInstIntrument XXmeta.notecharTeffEffective temperatureKphys.temperature.effectiveintlogg? 10-logarithm surface gravitylog(cm.s**-2)phys.gravitydoublenullablee_logg? 10-logarithm surface gravity errorlog(cm.s**-2)stat.errordoublenullable[Fe/H]? Metallicityphys.abund.Zdoublenullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.Fedoublenullablel_EWLi[<] Upper limit flag on EWLimeta.code.errorcharEWLi? Lithium line equivalent widthlog(0.1pm)spect.line.eqWidthdoublenullablee_EWLi? Lithium line equivalent width errorlog(0.1pm)stat.errordoublenullablef_EWLi[0/3]? Flag for lithium line equivalent width (1)meta.codeintnullableGamma? Gamma indexmeta.code;spect.index;em.gammadoublenullablee_Gamma? Gamma index errorstat.errordoublenullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricdoublenullablee_RV? Radial velocity errorkm/sstat.errordoublenullableMembPA? Membership probability: population Astat.probabilityfloatnullableMembPB? Membership probability: population Bstat.probabilityfloatnullableIDSequential ID numbermeta.idintSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from CName (right ascension part)degpos.eq.ra;meta.main_DEPositions from CName (declination part)degpos.eq.dec;meta.mainJ/A+A/612/A99/ngc6633Parameters for NGC6633CNameStar ID (HHMMSSss+DDMMSSs)meta.id;meta.maincharInstIntrument XXmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id.parentcharTeffEffective temperatureKphys.temperature.effectiveinte_Teff? Effective temperature errorKstat.error;phys.temperature.effectiveintnullablelogg? 10-logarithm surface gravitylog(cm.s**-2)phys.gravitydoublenullablee_logg? 10-logarithm surface gravity errorlog(cm.s**-2)stat.errordoublenullable[Fe/H]? Metallicityphys.abund.Zdoublenullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.Fedoublenullablel_EWLi[<] Upper limit flag on EWLimeta.code.errorcharEWLi? Lithium line equivalent widthlog(0.1pm)spect.line.eqWidthdoublenullablee_EWLi? Lithium line equivalent width errorlog(0.1pm)stat.errordoublenullablef_EWLi[0/3]? Flag for lithium line equivalent width (1)meta.codeintnullableGamma? Gamma indexmeta.code;spect.index;em.gammadoublenullablee_Gamma? Gamma index errorstat.errordoublenullableRV? Radial velocitykm/sphys.veloc;pos.heliocentricdoublenullablee_RV? Radial velocity errorkm/sstat.errordoublenullableMembPA? Membership probability: population Astat.probabilityfloatnullableMembPB? Membership probability: population Bstat.probabilityfloatnullableIDSequential ID numbermeta.idintSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from CName (right ascension part)degpos.eq.ra;meta.main_DEPositions from CName (declination part)degpos.eq.dec;meta.main