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.date.accessioned2023-01-10T14:43:45Z
dc.date.available2023-01-10T14:43:45Z
dc.date.issued2014
dc.descriptionIndexación: Scopuses
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 [a/Fe] ratios. © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.es
dc.description.urihttps://academic-oup-com.recursosbiblioteca.unab.cl/mnras/article/445/4/4241/1078225
dc.identifier.doi10.1093/mnras/stu1991
dc.identifier.issn0035-8711
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/35941
dc.language.isoenes
dc.rights.licenseAtribución 4.0 Internacional (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectAbundances-starses
dc.subjectBulge-Galaxyes
dc.subjectEvolutiones
dc.subjectPopulation II-Galaxyes
dc.subjectStarses
dc.titleThe Gaia-ESO Survey: The most metal-poor stars in the Galactic bulgees
dc.typeArtículoes
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Monthly Notices of the Royal Astronomical Society Volume 445, Issue 4, Pages 4241 - 424629 September 2014
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