J/ApJ/713/L1ivo://CDS.VizieR/J/ApJ/713/L1doi:10.26093/cds/vizier.17139001CDSD'Orazi V.Lucatello S.Gratton R.Bragaglia A.Carretta E.Shen Z.,Zaggia S.2018-02-01T11:50:43Z2012-05-16T11:42:40ZCDS support team

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

cds-question@unistra.frchemical-abundancesglobular-star-clusterseffective-temperaturedwarf-starsPrevious surveys in a few metal-poor globular clusters (GCs) showed that the determination of abundances for Li and proton-capture elements offers a key tool to address the intracluster pollution scenario. In this Letter, we present Na, O, and Li abundances in a large sample of dwarf stars in the metal-rich GC 47 Tucanae. We found a clear Na-O anticorrelation, in good agreement with what obtained for giant members by Carretta et al. (2009, Cat. J/A+A/505/117). While lithium and oxygen abundances appear to be positively correlated with each other, there is a large scatter, well exceeding observational errors, and no anticorrelation with sodium. These findings suggest that Li depletion, due to mechanisms internal to the stars (which are cooler and more metal-rich than those on the Spite plateau), combines with the usual pollution scenario responsible for the Na-O anticorrelation.2010ApJ...713L...1Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/713/L1CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/202 : Globular Clusters in the Milky Way (Harris, 1997)J/A+A/505/117 : Abundances of red giants in 15 GCs (Carretta+, 2009)J/A+A/503/545 : Equivalent widths of Li, Na, Fe, Ca in NGC 6397 (Lind+, 2009)J/AJ/135/1551 : Abundances of stars in 47 Tuc (Koch+, 2008)J/AJ/125/197 : CN abundances of the 47 Tuc main sequence (Harbeck+, 2003)J/A+AS/117/227 : Dwarf effective temperatures (Alonso+ 1996)J/A+AS/106/161 : (V,I) photometry in NGC 6356 and 47 Tuc (Bica+ 1994)J/ApJS/85/293 : HST Observations of core of 47 Tuc (de Marchi+ 1993)J/PASP/99/739 : BV photometry in 4 fields of 47 Tuc (Hesser+, 1987)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/713/L1https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/713/L1http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/713/L1https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/713/L1https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/713/L1http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/713/L1GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/713/L1/table1 (Properties of target stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/713/L1/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/713/L1/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/713/L1/table1?GETtext/xml+votable180.050000true6.15846-71.96320.0055555555555555566/33321 33323https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/713/L1?format=asciiOpticaldefaultJ/ApJ/713/L1/table1Properties of target starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[1/114] Stellar identification number (<[DLG2010] NNN> in Simbad)meta.id;meta.mainintRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainVmagThe V band magnitude (1)magphot.mag;em.opt.VfloatBmagThe B band magnitude (1)magphot.mag;em.opt.BfloatTeffEffective temperature (1)Kphys.temperature.effectiveintlog(g)Log of the gravitylog(cm.s**-2)phys.gravityfloatlognO? Log of the oxygen number abundance (2)phys.abundfloatnullablee_lognO? Error in LognOstat.errorfloatnullablelognNa? Log of the sodium number abundance (2)phys.abundfloatnullablee_lognNa? Error in LognNastat.errorfloatnullablelognLi? Log of the lithium number abundance (2)phys.abundfloatnullablee_lognLi? Error in LognListat.errorfloatnullable