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Article 2016-06

Autor: 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.

Aims. We report the discovery of two Li-rich giants, with A(Li) ~ 1.50, in an analysis of a sample of 40 giants of the open cluster Trumpler 20 (with turnoff mass ~1.8 M⊙). The cluster was observed in the context of the Gaia-ESO Survey. Methods. The atmospheric parameters and Li abundances were d...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/2789

Repositorio Universidad Andrés Bello
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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?
Article 2016-08

Autor: Villanova, S. Monaco, L. Moni Bidin, C. Assmann, P.

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...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/2972

Repositorio Universidad Andrés Bello
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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
Article 2018-11

Autor: Villanova, S. Carraro, G. Geisler, D. Monaco, L. Assmann, P.

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...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/11488

Repositorio Universidad Andrés Bello
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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
Article 2018

Autor: 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.

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...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/6361

Repositorio Universidad Andrés Bello
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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
Artículo 2018

Autor: Schiappacasse-Ulloa, J. Tang, B. Fernandez-Trincado, J. G. Zamora, O. Geisler, D. Frinchaboy, P. Schultheis, M. Dell'Agli, F. Villanova, S. Masseron, T. Meszaros, Sz Souto, D. Hasselquist, S. Cunha, K. Smith, V. V. Garcia-Hernandez, D. A. Vieira, K. Robin, A. C. Minniti, D. Zasowski, G. Moreno, E. Perez-Villegas, A. Lane, R. R. Ivans, I. I. Pan, K. Nitschelm, C. Santana, F. A. Carrera, R. Roman-Lopes, A.
Enlace original: https://repositorio.uc.cl/handle/11534/27600https://repositorio.uc.cl/handle/11534/27600

Repositorio UC
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Schiappacasse-Ulloa, J. ,  Tang, B. ,  Fernandez-Trincado, J. G. ,  Zamora, O. ,  Geisler, D. ,  Frinchaboy, P. ,  Schultheis, M. ,  Dell'Agli, F. ,  Villanova, S. ,  Masseron, T. ,  Meszaros, Sz ,  Souto, D. ,  Hasselquist, S. ,  Cunha, K. ,  Smith, V. V. ,  Garcia-Hernandez, D. A. ,  Vieira, K. ,  Robin, A. C. ,  Minniti, D. ,  Zasowski, G. ,  Moreno, E. ,  Perez-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
Article 2015-07

Autor: Sbordone, L. Monaco, L. Moni Bidin, C. Bonifacio, P. Villanova, S. Bellazzini, M. Ibata, R. Chiba, M. Geisler, D. Caffau, E. Duffau, S.

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...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/3763

Repositorio UNAB
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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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