J/ApJ/824/73ivo://CDS.VizieR/J/ApJ/824/73doi:10.26093/cds/vizier.18240073CDSMucciarelli A.Dalessandro E.Massari D.Bellazzini M.Ferraro F.R.,Lanzoni B.Lardo C.Salaris M.Cassisi S.2017-01-23T22:00:00Z2016-09-26T12:21:05ZCDS support team

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

cds-question@unistra.frglobular-star-clusterschemical-abundancesspectroscopyvisible-astronomyWide-band photometryWe present the first measure of Fe and Na abundances in NGC 6362, a low-mass globular cluster (GC) where first- and second-generation stars are fully spatially mixed. A total of 160 member stars (along the red giant branch (RGB) and the red horizontal branch (RHB)) were observed with the multi-object spectrograph FLAMES at the Very Large Telescope. We find that the cluster has an iron abundance of [Fe/H]=-1.09+/-0.01dex, without evidence of intrinsic dispersion. On the other hand, the [Na/Fe] distribution turns out to be intrinsically broad and bimodal. The Na-poor and Na-rich stars populate, respectively, the bluest and the reddest RGBs detected in the color-magnitude diagrams including the U filter. The RGB is composed of a mixture of first- and second-generation stars in a similar proportion, while almost all the RHB stars belong to the first cluster generation. To date, NGC 6362 is the least massive GC where both the photometric and spectroscopic signatures of multiple populations have been detected.2016ApJ...824...73Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/824/73CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/202 : Globular Clusters in the Milky Way (Harris, 1997)J/MNRAS/431/1995 : Deep uVI photometry of NGC2419 (Beccari+, 2013)J/A+A/549/A41 : Horizontal branch stars in 47 Tuc and M5 (Gratton+, 2013)J/A+A/548/A122 : Berkeley 39 stars photometry & abundances (Bragaglia+, 2012)J/A+A/539/A19 : Horizontal branch stars in NGC 1851 (Gratton+, 2012)J/AcA/62/357 : Proper motions in 6 globular clusters (Zloczewski+, 2012)J/A+A/534/A123 : Horizontal branch stars in NGC 2808 (Gratton+, 2011)J/A+A/534/A9 : Synthetic spectra of galactic GCs (Sbordone+, 2011)J/MNRAS/412/81 : Lithium abundance in M4 red giants (Mucciarelli+, 2011)J/A+A/524/A44 : CN and CH line strengths in 12 globulars (Pancino+, 2010)J/MNRAS/405/839 : Spectroscopic obs. of globular clusters (Sharina+, 2010)J/ApJ/695/L134 : Chemical anomalies in old LMC clusters (Mucciarelli+, 2009)J/A+A/490/625 : Abundances of NGC 6121 red giants (Marino+, 2008)J/AJ/130/2140 : Abundances & velocities in globular clusters (Pritzl+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/824/73https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/824/73http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/824/73https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/824/73https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/824/73http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/824/73GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/824/73/table1 (Coordinates, magnitudes, atmospheric parameters, [Fe/H] and [Na/Fe] abundance ratios for the target member stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/824/73/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/824/73/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/824/73/table1?GETtext/xml+votable180.050000true263.0750664-66.89974550.0055555555555555566/41304https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/824/73?format=asciiOpticaldefaultJ/ApJ/824/73/table1Coordinates, magnitudes, atmospheric parameters, [Fe/H] and [Na/Fe] abundance ratios for the target member starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[201343/802409] Stellar identifier from Paper I (Dalessandro+, 2014ApJ...791L...4D)meta.id;meta.mainintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainUmag[16.5/18.1]? The U band magnitudemagphot.mag;em.opt.UfloatnullableBmag[14.4/17.1] The B band magnitudemagphot.mag;em.opt.BfloatVmag[12.9/16.2] The V band magnitudemagphot.mag;em.opt.VfloatTeff[3886/6006] Effective temperatureKphys.temperature.effectiveintlog(g)[0.6/2.7] Log surface gravitylog(cm.s**-2)phys.gravityfloatVt[1.2/1.9] Turbulent velocitykm/sphys.veloc.microTurbfloat[Fe/H][-1.3/-0.9] Log Fe/H abundance ratio relative to Sunlog(Sun)phys.abund.Fe;arith.ratiofloate_[Fe/H][0.02/0.2] Uncertainty in [Fe/H]log(Sun)stat.error;phys.abund.Fefloat[Na/Fe][-0.2/0.6] Log Na/Fe abundance ratio relative to Sunlog(Sun)phys.abund;arith.ratiofloate_[Na/Fe][0.06/0.2] Uncertainty in [Na/Fe]log(Sun)stat.error;phys.abundfloat