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Schiappacasse-Ulloa, J.Tang, B.Fernández-Trincado, J.G.Zamora, O.Geisler, D.Frinchaboy, P.Schultheis, M.Dell'Agli, F.Villanova, S.Masseron, T.Mészáros, S.Souto, D.Hasselquist, S.Cunha, K.Smith, V.V.García-Hernández, D.A.Vieira, K.Robin, A.C.Minniti, D.Zasowski, G.Moreno, E.Pérez-Villegas, A.Lane, R.R.Ivans, I.I.Pan, K.Nitschelm, C.Santana, F.A.Carrera, R.Roman-Lopes, A.[A Chemical and Kinematical Analysis of the Intermediate-age Open Cluster IC 166 from APOGEE and Gaia DR2]A Chemical and Kinematical Analysis of the Intermediate-age Open Cluster IC 166 from APOGEE and Gaia DR2

Context. Globular clusters are known to host multiple stellar populations, which are a signature of their formation process. The globular cluster E3 is one of the few low-mass globulars that is thought not to host multiple populations. Aims. We investigate red giant branch stars in E3 with the ai...


Monaco, L.Villanova, S.Carraro, G.Mucciarelli, A.Moni Bidin, C.[Chemical abundance analysis of red giant branch stars in the globular cluster E3]Chemical abundance analysis of red giant branch stars in the globular cluster E3

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

Sagittarius (Sgr) is a massive disrupted dwarf spheroidal galaxy in the Milky Way halo that has undergone several stripping events. Previous chemical studies were restricted mainly to a few, metal-rich ([Fe/H] ) stars that suggested a top-light initial mass function (IMF). Here we present the fir...


Hansen, C.J.El-Souri, M.Monaco, L.Villanova, S.Bonifacio, P.Caffau, E.Sbordone, L.[Ages and Heavy Element Abundances from Very Metal-poor Stars in the Sagittarius Dwarf Galaxy]Ages and Heavy Element Abundances from Very Metal-poor Stars in the Sagittarius Dwarf Galaxy

Smiljanic, R.Franciosini, E.Randich, S.Magrini, L.Bragaglia, A.Pasquini, L.Vallenari, A.Tautvaišienė, G.Biazzo, K.Frasca, A.Donati, P.Delgado Mena, E.Casey, A. R.Geisler, D.Villanova, S.Tang, B.Sousa, S. G.Gilmore, G.Bensby, T.François, P.Koposov, S. E.Lanzafame, A. C.Pancino, E.Recio-Blanco, A.Costado, M. T.Hourihane, A.Lardo, C.de Laverny, P.Lewis, J.Monaco, L.Morbidelli, L.Sacco, G. G.Worley, C. C.Zaggia, S.Martell, S.[The Gaia-ESO Survey: Inhibited extra mixing in two giants of the open cluster Trumpler 20?]The Gaia-ESO Survey: Inhibited extra mixing in two giants of the open cluster Trumpler 20?

We present the abundance analysis for a sample of 18 red giant branch stars in the metal-poor globular cluster NGC 4147 based on medium- and high-resolution spectra. This is the first extensive spectroscopic study of this cluster. We derive abundances of C, N, O, Na, Mg, Al, Si, Ca, Ti, Cr, Fe, N...


Villanova, S.Monaco, L.Moni Bidin, C.Assmann, P.[A spectroscopic study of the globular Cluster NGC 4147]A spectroscopic study of the globular Cluster NGC 4147

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

The formation processes that led to the current Galactic stellar halo are still under debate. Previous studies have provided evidence for different stellar populations in terms of elemental abundances and kinematics, pointing to different chemical and star formation histories (SFHs). In the prese...


Fernández-Alvar, E.Carigi, L.Schuster, W.J.Hayes, C.R.Ávila-Vergara, N.Majewski, S.R.Allende Prieto, C.Beers, T.C.Sánchez, S.F.Zamora, O.García-Hernández, D.A.Tang, B.Fernández-Trincado, J.G.Tissera, P.Geisler, D.Villanova, S.[Disentangling the Galactic Halo with APOGEE. II. Chemical and Star Formation Histories for the Two Distinct Populations]Disentangling the Galactic Halo with APOGEE. II. Chemical and Star Formation Histories for the Two Distinct Populations

Context. The tidal disruption of the Sagittarius dwarf spheroidal galaxy (Sgr dSph) is producing the most prominent substructure in the Milky Way (MW) halo, the Sagittarius Stream. Aside from field stars, it is suspected that the Sgr dSph has lost a number of globular clusters (GC). Many Galactic...


Sbordone, L.Monaco, L.Moni Bidin, C.Bonifacio, P.Villanova, S.Bellazzini, M.Ibata, R.Chiba, M.Geisler, D.Caffau, E.Duffau, S.[Chemical abundances of giant stars in NGC 5053 and NGC 5634, two globular clusters associated with the Sagittarius dwarf spheroidal galaxy?]Chemical abundances of giant stars in NGC 5053 and NGC 5634, two globular clusters associated with the Sagittarius dwarf spheroidal galaxy?

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