J/A+A/539/A19ivo://CDS.VizieR/J/A+A/539/A19doi:10.26093/cds/vizier.35390019CDSGratton R.G.Lucatello S.Carretta E.Bragaglia A.D'orazi V.,Al Momany Y.Sollima A.Salaris M.Cassisi S.2022-05-11T11:22:54Z2012-12-13T09:27:08ZCDS support team

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

cds-question@unistra.frglobular-star-clusterschemical-abundanceshorizontal-branch-starsThe chemical composition of horizontal branch (HB) stars might help to clarify the formation history of individual globular clusters (GCs). We studied the Na-O anti-correlation from moderately high resolution spectra for 91 stars on the bimodal HB of NGC 1851; in addition we observed 13 stars on the lower red giant branch (RGB). In our HB sample, 35 stars are on the blue HB (BHB), one is an RR Lyrae, and 55 stars are on the red HB (RHB). The ratio of BHB to RHB stars is close to the total in the cluster (35 and 54%, respectively), while RR Lyrae variables are under-represented, (they are ~12% of the NGC 1851 stars). We also derived abundances for He and N in BHB stars.2012A&A...539A..19Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/539/A19CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/534/A123 : Horizontal branch stars in NGC 2808 (Gratton+, 2011)J/A+A/549/A41 : Horizontal branch stars in 47 Tuc and M5 (Gratton+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/539/A19https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/539/A19http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/539/A19https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/539/A19https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/539/A19http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/539/A19GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/539/A19/stars (Program stars: basic data (table1), atmospheric parameters and Fe abundances (table2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/539/A19/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/539/A19/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/539/A19/stars?GETtext/xml+votable180.050000true78.4984125-39.905905560.0055555555555555566/34242-342437.952274030004205e-20 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/539/A19?format=asciidefaultJ/A+A/539/A19/starsProgram stars: basic data (table1), atmospheric parameters and Fe abundances (table2)TypeType of variable (G1)meta.code;src.varcharStarStar designationmeta.id;meta.mainintprimaryrecnoRecord 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.mainBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableKmag? K magnitudemagphot.mag;em.IR.KfloatnullableRVRadial velocitykm/sphys.veloc;pos.heliocentricfloatS/N12? Signal-to-noise ratio of the Giraffe spectrograph in HR12 grating (5808-6138{AA})stat.snrintnullableS/N19? Signal-to-noise ratio of the Giraffe spectrograph in HR19 grating (7728-8317{AA})stat.snrintnullableTeffEffective temperatureKphys.temperature.effectiveintloggLog surface gravitylog(cm.s**-2)phys.gravityfloato_[Fe/H]1? Number of FeI linesmeta.numberintnullable[Fe/H]1? Value of [Fe/H] from FeI lineslog(Sun)phys.abund.Fefloatnullablee_[Fe/H]1? rms of [Fe/H] from FeI lineslog(Sun)stat.error;phys.abund.Fefloatnullableo_[Fe/H]2? Number of FeII linesmeta.numberintnullable[Fe/H]2? Value of [Fe/H] from FeII lineslog(Sun)phys.abund.Fefloatnullablee_[Fe/H]2? rms of [Fe/H] from FeII lineslog(Sun)stat.error;phys.abund.FefloatnullableMmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/539/A19/table3Abundances of other elements (with corrected values of [Al/Fe] from erratum in A&A, 547, C2)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTypeType of variable (G1)meta.code;src.varcharStarStar designationmeta.id;meta.mainintl_[N/Fe]Limit flag on [N/Fe]meta.code.error;phys.abundchar[N/Fe]? Value of [N/Fe] from CN lineslog(Sun)phys.abundfloatnullable[O/Fe]? Value of [O/Fe] from OI lineslog(Sun)phys.abundfloatnullablel_[Na/Fe]Limit flag on [Na/Fe]meta.code.error;phys.abundchar[Na/Fe]? Value of [Na/Fe] from NaI lineslog(Sun)phys.abundfloatnullablel_[Mg/Fe]1Limit flag on [Mg/Fe]Imeta.code.error;phys.abundchar[Mg/Fe]1? Value of [Mg/Fe] from MgI lineslog(Sun)phys.abundfloatnullable[Mg/Fe]2? Value of [Mg/Fe] from MgII lineslog(Sun)phys.abundfloatnullable[Al/Fe]? Value of [Al/Fe] from AlI lines (1)log(Sun)phys.abundfloatnullable[Si/Fe]? Value of [Si/Fe] from SiI lineslog(Sun)phys.abundfloatnullable[Ca/Fe]? Value of [Ca/Fe] from CaI lineslog(Sun)phys.abundfloatnullable[Mn/Fe]? Value of [Mn/Fe] from MnI lineslog(Sun)phys.abundfloatnullable[Ba/Fe]? Value of [Ba/Fe] from BaII lineslog(Sun)phys.abundfloatnullable