Howes, L.M.Asplund, M.Casey, A.R.Keller, S.C.Yong, D.Gilmore, G.Lind, K.Worley, C.Bessell, M.S.Casagrande, L.Marino, A.F.Nataf, D.M.2023-01-102023-01-1020140035-8711https://repositorio.unab.cl/xmlui/handle/ria/35941Indexación: ScopusWe 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.enAbundances-starsBulge-GalaxyEvolutionPopulation II-GalaxyStarsArtículoAtribución 4.0 Internacional (CC BY 4.0)10.1093/mnras/stu1991