J/MNRAS/446/3556ivo://CDS.VizieR/J/MNRAS/446/3556doi:10.26093/cds/vizier.74463556CDSMacLean B.T.De Silva G.M.Lattanzio J.2024-08-14T20:19:07Z2015-11-24T15:48:02ZCDS support team

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

cds-question@unistra.fropen-star-clusterschemical-abundancesOpen clusters are historically regarded as single-aged stellar populations representative of star formation within the Galactic disc. Recent literature has questioned this view, based on discrepant Na abundances relative to the field, and concerns about the longevity of bound clusters contributing to a selection bias: perhaps long-lived open clusters are chemically different to the star formation events that contributed to the Galactic disc. We explore a large sample of high-resolution Na, O, Ba and Eu abundances from the literature, homogenized as much as reasonable including accounting for non-local thermodynamic equilibrium (NLTE) effects, variations in analysis and choice of spectral lines. Compared to a template globular cluster and representative field stars, we find no significant abundance trends, confirming that the process producing the Na-O anticorrelation in globular clusters is not present in open clusters. Furthermore, previously reported Na enhancement of open clusters is found to be an artefact of NLTE effects, with the open clusters matching a subset of chemically tagged field stars.2015MNRAS.446.3556Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/446/3556CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/360/499 : Equivalent widths of 9 stars of M 67 (Tautvaisiene+, 2000)J/A+A/431/933 : Abundances of NGC 7789 evolved stars (Tautvaisiene+, 2005)J/A+A/433/185 : 102 F & G dwarfs detailed abundance analysis (Bensby+, 2005)J/A+A/562/A71 : Solar neighbourhood dwarfs chemical abund. (Bensby+, 2014)J/A+A/548/A122 : Berkeley 39 stars photometry & abundances (Bragaglia+, 2012)J/A+A/489/403 : Line abundances for solar stars (Pace+, 2008)J/MNRAS/419/1350 : Red giants abundances in 4 open clusters (Reddy+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/446/3556https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/446/3556http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/446/3556https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/446/3556https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/446/3556http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/446/3556GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/446/3556/clusters (List of open cluster studied)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/446/3556/clusters?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/446/3556/clusters?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/446/3556/clusters?GETtext/xml+votable180.050000true116.675-4.60.0055555555555555566/463 2436 4298 4698 14175 14575 21538 21586 21719 23538 24121 28480 28711 37294 37351 41613 42177 42216 42274 43034https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/446/3556?format=asciidefaultJ/MNRAS/446/3556/clustersList of open cluster studiedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id;meta.maincharRAJ2000? Simbad right ascension (J2000)pos.eq.ra;meta.mainnullableDEJ2000? Simbad declination (J2000)pos.eq.dec;meta.mainnullableNstarNumber of stars for the cluster in table2meta.numberintSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/446/3556/table2Open cluster sample, with star names as given in each paper and references for each starSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id.parentcharStarStar designation (1)meta.id;meta.mainchar[Fe/H]? Metallicity [Fe/H] (2)phys.abund.Zfloatnullablee_[Fe/H]? rms uncertainty on [Fe/H]stat.error;phys.abund.Fefloatnullable[O/Fe]? Abundance [O/Fe] (2)phys.abundfloatnullablee_[O/Fe]? rms uncertainty on [O/Fe]stat.error;phys.abundfloatnullable[Na/Fe]? Abundance [Na/Fe] (2)phys.abundfloatnullablee_[Na/Fe]? rms uncertainty on [Na/Fe]stat.error;phys.abundfloatnullableCorr? NLTE correction on Na abundances (3)arith.factor;phot.fluxfloatnullablee_Corr? rms uncertainty on NLTE correctionstat.errorfloatnullable[Ba/Fe]? Abundance [Ba/Fe] (2)phys.abundfloatnullablee_[Ba/Fe]? rms uncertainty on [Ba/Fe]stat.error;phys.abundfloatnullable[Eu/Fe]? Abundance [Eu/Fe] (2)phys.abundfloatnullablee_[Eu/Fe]? rms uncertainty on [Eu/Fe]stat.error;phys.abundfloatnullableRef? Reference, in refs.dat filemeta.ref;pos.frame;meta.fileintnullableJ/MNRAS/446/3556/refsReferencesRefReference numbermeta.id;meta.mainintprimaryBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint