J/MNRAS/428/2321ivo://CDS.VizieR/J/MNRAS/428/2321doi:10.26093/cds/vizier.74282321CDSMitschang A.W.De Silva G.Sharma S.Zucker D.B.2024-07-20T20:13:22Z2014-03-13T09:27:01ZCDS support team

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

cds-question@unistra.fropen-star-clusterschemical-abundancesThe first generation of large-scale chemical tagging surveys, in particular the High Efficiency and Resolution Multi-Element Spectrograph (HERMES)/Galactic Archaeology with HERMES million star survey, promises to vastly expand our understanding of the chemical and dynamical evolution of the Galaxy. This, however, is contingent on our ability to confidently perform chemical tagging on such a large data set. Chemical homogeneity has been observed across a range of elements within several Galactic open clusters, yet the level to which this is the case globally, and particularly in comparison to the scatter across clusters themselves, is not well understood. The patterns of elements in coeval cluster members, occupying a complex chemical abundance space, are rooted in the evolution, ultimately the nature of the very late stages, of early generations of stars. The current astrophysical models of such stages are not yet sufficient to explain all observations, combining with our significant gaps in the understanding of star formation, makes this a difficult arena to tackle theoretically. Here, we describe a robust pair-wise metric used to gauge the chemical difference between two stellar components. This metric is then applied to a data base of high-resolution literature abundance sources to derive a function describing the probability that two stars are of common evolutionary origin. With this cluster probability function, it will be possible to report a confidence, grounded in empirical observational evidence, with which clusters are detected, independent of the group finding methods. This formulation is also used to probe the role of chemical dimensionality, and that of individual chemical species, on the ability of chemical tagging to differentiate coeval groups of stars.2013MNRAS.428.2321Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/428/2321CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/ocl : Optically visible open clusters and Candidates (Dias+ 2002-2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/428/2321https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/428/2321http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/428/2321https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/428/2321https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/428/2321http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/428/2321GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/428/2321/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/428/2321/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/428/2321/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/428/2321/stars?GETtext/xml+votable180.050000true104.53429176.40538890.0055555555555555566/60 75 309 320 322 334 336 348 373 461 463 472 474-475 496 890 1024 1032 1042 1058 1075 2433 2436 2962 4255 4277 4298 4320 4698-4699 4720 10796 14573 14575 16488-16490 16576 17904 17983 21538-21539 22130 22237 22239 23130 23479 23503 23518 23525 23527 23529 23535 23537 23539 23542 23544-23545 23548 23861 24068 24099 24104 24194 24206 24209 24506 28093 28433 28439 28483 28485-28486 28489-28490 28499 28806 30215 30438-30439 30444 31788 31790 37229-37231 37240 37316 37318 37349-37351 37787-37788 37790 37867 37933 37944 37971 38242 38248 39129 39131 39356 41613 41834 42177 42274 42402https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/428/2321?format=asciiOpticaldefaultJ/MNRAS/428/2321/starsList of studied starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Simbad Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Simbad Declination (J2000)pos.eq.dec;meta.mainSNameSimbad namemeta.idcharClusterCluster namemeta.id.parentcharN*Number of stars studied in this clustermeta.numberintnullableStarStar name as given in source textmeta.id;meta.maincharprimaryNaNumber of abundances for this star in table3meta.numberintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/428/2321/table3Literature abundance data baserecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id.parentcharCID[4/50] Unique ID of cluster (per study) in database (1)meta.idintStarStar name as given in source text (2)meta.id;meta.maincharSID[700/1250] Unique ID of star (per CID) in database (1)meta.idintSrcReference code in refs.dat filemeta.notecharElElement speciesphys.atmol.elementcharAbundX/Fe abundance relative to Solar (Fe/H for Fe)log(Sun)phys.abundfloate_Abund? Tabulated error on abundancelog(Sun)stat.errorfloatnullableJ/MNRAS/428/2321/refsReferencesComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.notecharBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorchar