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We present Li, Na, Al, and Fe abundances of 199 lower red giant branch star members of the stellar system Omega Centauri, using high-resolution spectra acquired with FLAMES at the Very Large Telescope. The A(Li) distribution is peaked at A(Li) ∼ 1 dex with a prominent tail towards lower values. T...


Mucciarelli, A.Salaris, M.Monaco, L.Bonifacio, P.Fu, X.Villanova, S.[Lithium abundance in lower red giant branch stars of Omega Centauri]Lithium abundance in lower red giant branch stars of Omega Centauri

NGC 6791 is a unique stellar cluster, key to our understanding of both the multiple stellar population phenomenon and the evolution and assembly of the Galaxy. However, despite many investigations, its nature is still very controversial. Geisler et al. found evidence suggesting that it was the fi...


Villanova, S.Carraro, G.Geisler, D.Monaco, L.Assmann, P.[NGC 6791: A Probable Bulge Cluster without Multiple Populations]NGC 6791: A Probable Bulge Cluster without Multiple Populations

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