The Gaia-ESO Survey: the most metal-poor stars in the galactic bulge

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dc.contributor.authorHowes, L.M.
dc.contributor.authorAsplund, M.
dc.contributor.authorCasey, A.R.
dc.contributor.authorKeller, S.C.
dc.contributor.authorYong, D.
dc.contributor.authorGilmore, G.
dc.contributor.authorLind, K.
dc.contributor.authorWorley, C.
dc.contributor.authorBessell, M.S.
dc.contributor.authorCasagrande, L.
dc.contributor.authorMarino, A.F.
dc.contributor.authorNataf, D.M.
dc.contributor.authorOwen, C.I.
dc.contributor.authorDa Costa, G.S.
dc.contributor.authorSchmidt, B.P.
dc.contributor.authorTisserand, P.
dc.contributor.authorRandich, S.
dc.contributor.authorFeltzing, S.
dc.contributor.authorVallenari, A.
dc.contributor.authorAllende Prieto, C.
dc.contributor.authorBensby, T.
dc.contributor.authorFlaccomio, E.
dc.contributor.authorKorn, A.J.
dc.contributor.authorPancino, E.
dc.contributor.authorRecio-Blanco, A.
dc.contributor.authorSmiljanic, R.
dc.contributor.authorBergemann, M.
dc.contributor.authorCostado, M.T.
dc.contributor.authorDamiani, F.
dc.contributor.authorHeiter, U.
dc.contributor.authorHill, V.
dc.contributor.authorHourihane, A.
dc.contributor.authorJofré, P.
dc.contributor.authorLardo, C.
dc.contributor.authorde Laverny, P.
dc.contributor.authorMagrini, L.
dc.contributor.authorMaiorca, E.
dc.contributor.authorMasseron, T.
dc.contributor.authorMorbidelli, L.
dc.contributor.authorSacco, G.G.
dc.contributor.authorMinniti, D.
dc.contributor.authorZoccali, M.
dc.date.accessioned2023-05-30T16:06:02Z
dc.date.available2023-05-30T16:06:02Z
dc.date.issued2014-09
dc.descriptionIndexación: Scopus.es
dc.description.abstractWe present the first results of the EMBLA survey (Extremely Metal-poor BuLge stars with AAOmega), aimed at finding metal-poor stars in the Milky Way bulge, where the oldest stars should now preferentially reside. EMBLA utilizes SkyMapper photometry to pre-select metal-poor candidates, which are subsequently confirmed using AAOmega spectroscopy. We describe the discovery and analysis of four bulge giants with −2.72 ≤ [Fe/H] ≤ −2.48, the lowest metallicity bulge stars studied with high-resolution spectroscopy to date. Using FLAMES/UVES spectra through the Gaia-ESO Survey we have derived abundances of twelve elements. Given the uncertainties, we find a chemical similarity between these bulge stars and halo stars of the same metallicity, although the abundance scatter may be larger, with some of the stars showing unusual [α/Fe] ratios.es
dc.description.urihttps://academic-oup-com.recursosbiblioteca.unab.cl/mnras/article/445/4/4241/1078225
dc.identifier.citationMonthly Notices of the Royal Astronomical Society. sVolume 445, Issue 4, Pages 4241 - 4246. 29 September 2014es
dc.identifier.doiDOI: 10.1093/mnras/stu1991
dc.identifier.issn0035-8711
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/50118
dc.language.isoenes
dc.publisherOxford University Presses
dc.rights.licenseAtribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectStars: Abundanceses
dc.subjectStars: Population IIes
dc.subjectGalaxy: Bulgees
dc.subjectGalaxy: Evolutiones
dc.titleThe Gaia-ESO Survey: the most metal-poor stars in the galactic bulgees
dc.typeArtículoes
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