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dc.contributor.authorPuls, Arthur Alencastropt_BR
dc.contributor.authorAlves-Brito, Alanpt_BR
dc.contributor.authorCampos, Fabíolapt_BR
dc.contributor.authorDias, Bruno Moreira de Souzapt_BR
dc.contributor.authorBarbuy, Beatrizpt_BR
dc.date.accessioned2018-06-21T02:32:39Zpt_BR
dc.date.issued2018pt_BR
dc.identifier.issn0035-8711pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/179616pt_BR
dc.description.abstractThe metal-rich Galactic globular cluster NGC6366 is the fifth closest to the Sun. Despite its interest, it has received scarce attention, and little is known about its internal structure. Its kinematics suggests a link to the halo, but its metallicity indicates otherwise. We present a detailed chemical analysis of eight giant stars of NGC6366, using high-resolution and highquality spectra (R > 40 000, S/N > 60) obtained at the VLT (8.2 m) and CFHT (3.6 m) telescopes. We attempted to characterize its chemistry and to search for evidence of multiple stellar populations. The atmospheric parameters were derived using the method of excitation and ionization equilibrium of Fe I and Fe II lines and from those atmospheric parameters we calculated the abundances for other elements and found that none of the elements measured presents star-to-star variation greater than the uncertainties. We compared the derived abundances with those of other globular clusters and field stars available in the literature. We determined a mean [Fe/H] = −0.60 ± 0.03 for NGC6366 and found some similarity of this object with M71, another inner halo globular cluster. The Na–O anticorrelation extension is short and no star-to-star variation in Al is found. The presence of second generation stars is not evident in NGC6366.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofMonthly notices of the royal astronomical society. Oxford. Vol. 476, no. 1 (May 2018), p. 690-704pt_BR
dc.rightsOpen Accessen
dc.subjectStars: abundancesen
dc.subjectAglomerados globularespt_BR
dc.subjectComposicao estelarpt_BR
dc.subjectGalaxy: abundancesen
dc.subjectGlobular clusters: individual: NGC6366en
dc.subjectPopulacoes estelarespt_BR
dc.subjectMetalicidadept_BR
dc.titleChemical analysis of eight giant stars of the globular cluster NGC 6366pt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001066806pt_BR
dc.type.originEstrangeiropt_BR


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