J/A+A/603/A37ivo://CDS.VizieR/J/A+A/603/A37doi:10.26093/cds/vizier.36030037CDSGruyters P.Casagrande L.Milone A.P.Hodgkin S.T.Serenelli A.,Feltzing S.2017-07-18T14:41:25Z2017-07-04T08:29:39ZCDS support team

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

cds-question@unistra.frastrometryglobular-star-clustersastronomical-modelsstellar-atmospheresvisible-astronomymedium-band-photometrySpectroscopic studies have demonstrated that nearly all Galactic globular clusters (GCs) harbour multiple stellar populations with different chemical compositions. Moreover, colour-magnitude diagrams based exclusively on Stroemgrem photometry have allowed us to identify and characterise multiple populations along the RGB of a large number of clusters. In this paper we show for the first time that Stroemgren photometry is also very efficient at identifying multiple populations along the AGB, and demonstrate that the AGB of M3, M92, NGC362, NGC1851, and NGC6752 are not consistent with a single stellar population. We also provide a catalogue of RGB and AGB stars photometrically identified in these clusters for further spectroscopic follow-up studies. We combined photometry and elemental abundances from the literature for RGB and AGB stars in NGC6752 where the presence of multiple populations along the AGB has been widely debated. We find that, while the MS, SGB, and RGB host three stellar populations with different helium and light element abundances, only two populations of AGB stars are present in the cluster. These results are consistent with standard evolutionary theory.2017A&A...603A..37Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/603/A37CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/787/110 : SAGA: Stromgren survey of seismic KIC stars (Casagrande+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/603/A37https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/603/A37http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/603/A37https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/603/A37https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/603/A37http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/603/A37GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/603/A37/tableb1 (Positions and y-mag of RGB and AGB stars in the Grundahl data of NGC362, NGC1851 and NGC6341)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/603/A37/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/603/A37/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/603/A37/tableb1?GETtext/xml+votable180.050000true15.834377-70.899370.005555555555555556Cone search capability for table J/A+A/603/A37/tableb2 (Position and uvby photometry of RGB and AGB stars in the globular cluster M3)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/603/A37/tableb2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/603/A37/tableb2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/603/A37/tableb2?GETtext/xml+votable180.050000true205.705830528.3981320.0055555555555555566/9666 10336-10337 33330https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/603/A37?format=asciiOpticaldefaultJ/A+A/603/A37/tableb1Positions and y-mag of RGB and AGB stars in the Grundahl data of NGC362, NGC1851 and NGC6341recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterGlobular Cluster IDmeta.id.parentcharStarStar ID, within the clustermeta.id;meta.mainintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainymagStromgren y magnitudemagphot.mag;em.opt.VfloatPhaseEvolutionary phase (AGB or RGB)meta.code.classcharJ/A+A/603/A37/tableb2Position and uvby photometry of RGB and AGB stars in the globular cluster M3recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDStar IDmeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainumagStromgren u magnitudemagphot.mag;em.opt.UfloatvmagStromgren v magnitudemagphot.mag;em.opt.BfloatbmagStromgren b magnitudemagphot.mag;em.opt.BfloatymagStromgren y magnitudemagphot.mag;em.opt.Vfloat