Chemical composition of the stellar cluster Gaia1: No surprise behind Sirius

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dc.contributor.authorMucciarelli, A.
dc.contributor.authorMonaco, L.
dc.contributor.authorBonifacio, P.
dc.contributor.authorSaviane, I.
dc.date.accessioned2018-01-04T18:49:06Z
dc.date.available2018-01-04T18:49:06Z
dc.date.issued2017-07
dc.descriptionIndexación: Web of Science; Scopus.es_CL
dc.description.abstractWe observed six He-clump stars of the intermediate-Age stellar cluster Gaia1 with the MIKE/Magellan spectrograph. A possible extra-galactic origin of this cluster, recently discovered thanks to the first data release of the ESA Gaia mission, has been suggested, based on its orbital parameters. Abundances for Fe, α, proton-And neutron-capture elements have been obtained. We find no evidence of intrinsic abundance spreads. The iron abundance is solar ([FeI/H] = + 0.00 ± 0.01; σ = 0.03 dex). All the other abundance ratios are generally solar-scaled, similar to the Galactic thin disk and open cluster stars of similar metallicity. The chemical composition of Gaia1 does not support an extra-galactic origin for this stellar cluster, which can be considered as a standard Galactic open cluster.es_CL
dc.description.urihttps://www.aanda.org/articles/aa/abs/2017/07/aa31009-17/aa31009-17.html
dc.identifier.citationAstronomy and Astrophysics, 603, art. no.L7es_CL
dc.identifier.issn0004-6361
dc.identifier.otherhttps://doi.org/10.1051/0004-6361/201731009
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/5034
dc.language.isoenes_CL
dc.publisherEDP Scienceses_CL
dc.subjectOpen clusters and associations: individual: Gaia1es_CL
dc.subjectStars: abundanceses_CL
dc.subjectTechniques: spectroscopices_CL
dc.titleChemical composition of the stellar cluster Gaia1: No surprise behind Siriuses_CL
dc.typeArtículoes_CL
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