J/A+A/539/A157ivo://CDS.VizieR/J/A+A/539/A157doi:10.26093/cds/vizier.35390157CDSMonaco L.Villanova S.Bonifacio P.Caffau E.Geisler D.Marconi G.,Momany Y.Ludwig H.-G.2012-07-14T19:55:05Z2012-06-25T20:10:16ZCDS support team

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

cds-question@unistra.frglobular-star-clustersdwarf-starschemical-abundancesThe abundance inhomogeneities of light elements observed in globular clusters (GCs), and notably the ubiquitous Na-O anti-correlation, are generally interpreted as evidence that GCs comprise several generations of stars. There is an on-going debate as to the nature of the stars, which produce the inhomogeneous elements, and investigating the behavior of several elements is a way to shed new light on this problem. We aim at investigating the Li and Na content of the GC M4, that is known to have a well defined Na-O anti-correlation. We obtained moderate resolution (R=17000-18700) spectra for 91 main sequence (MS)/sub-giant branch stars of M4 with the Giraffe spectrograph at the FLAMES/VLT ESO facility. Using model atmospheres analysis we measured lithium and sodium abundances.2012A&A...539A.157Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/539/A157CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/443/124 : Radial Velocities of Stars in M4 (Peterson+ 1995)J/PAZh/22/847 : Identification and coordinates in M4 (Shokin+, 1996)J/AJ/114/189 : M4 CCD photometry (Alcaino+, 1997)J/ApJS/120/265 : HST photometry of M4 (Ibata+, 1999)J/AJ/124/1486 : M4 UBV color-magnitude diagrams (Mochejska+, 2002)J/AJ/127/2771 : HST proper-motions of M4 main-sequence stars (Richer+, 2004)J/ApJ/689/1031 : Heavy element abundances in giant stars (Yong+, 2008)J/A+A/490/625 : Abundances of NGC 6121 red giants (Marino+, 2008)J/MNRAS/412/81 : Lithium abundance in M4 red giants (Mucciarelli+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/539/A157https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/539/A157http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/539/A157https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/539/A157https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/539/A157http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/539/A157GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/539/A157/tablea1 (Basic data for MS/SGB stars studied in this paper)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/539/A157/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/539/A157/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/539/A157/tablea1?GETtext/xml+votable180.050000true246.0545833-26.39297220.0055555555555555566/42955https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/539/A157?format=asciiOpticaldefaultJ/A+A/539/A157/tablea1Basic data for MS/SGB stars studied in this paperSeqSequential numbermeta.recordintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloatxiTurbulent velocity {xi}km/sphys.velocfloatA(Fe)[6.12/6.36] Fe abundancephys.abund.FefloatA(Na)[4.94/5.52] Na abundancephys.abundfloatA(Li)[0.86/2.87] Li abundancephys.abundfloatEW(Li)[8/114] Li equivalent width0.1pmspect.line.eqWidthintS/NSpectral signal-to-noise at the lithium linestat.snrint