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Article 2018-04

Autor: Bonifacio, P. Caffau, E. Spite, M. Spite, F. Sbordone, L. Monaco, L. François, P. Plez, B. Molaro, P. Gallagher, A.J. Cayrel, R. Christlieb, N. Klessen, R.S. Koch, A. Ludwig, H.-G. Steffen, M. Zaggia, S. Abate, C.

Context. Extremely metal-poor (EMP) stars provide us with indirect information on the first generations of massive stars. The TOPoS survey has been designed to increase the census of these stars and to provide a chemical inventory that is as detailed as possible. Aims. Seven of the most iron-poor...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/8895

Repositorio Universidad Andrés Bello
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Bonifacio, P. ,  Caffau, E. ,  Spite, M. ,  Spite, F. ,  Sbordone, L. ,  Monaco, L. ,  François, P. ,  Plez, B. ,  Molaro, P. ,  Gallagher, A.J. ,  Cayrel, R. ,  Christlieb, N. ,  Klessen, R.S. ,  Koch, A. ,  Ludwig, H.-G. ,  Steffen, M. ,  Zaggia, S. ,  Abate, C. ,  [TOPoS: IV. Chemical abundances from high-resolution observations of seven extremely metal-poor stars] ,  TOPoS: IV. Chemical abundances from high-resolution observations of seven extremely metal-poor stars
Article 2018-10

Autor: Lemasle, B. Hajdu, G. Kovtyukh, V. Inno, L. Grebel, E.K. Catelan, M. Bono, G. François, P. Kniazev, A. Da Silva, R. Storm, J.

Context. The ratio of the first overtone (1O)/fundamental (F) periods of mixed-mode Cepheids that pulsate simultaneously in these two modes (F/1O) is metallicity-dependent. It can therefore be used to characterize the systems that host such variable stars. Aims. We want to take advantage of the F...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/11499

Repositorio Universidad Andrés Bello
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Lemasle, B. ,  Hajdu, G. ,  Kovtyukh, V. ,  Inno, L. ,  Grebel, E.K. ,  Catelan, M. ,  Bono, G. ,  François, P. ,  Kniazev, A. ,  Da Silva, R. ,  Storm, J. ,  [Milky Way metallicity gradient from Gaia DR2 F/1O double-mode Cepheids] ,  Milky Way metallicity gradient from Gaia DR2 F/1O double-mode Cepheids
Article 2016-04

Autor: François, P. Monaco, L. Bonifacio, P. Moni Bidin, C. Geisler, D.

Context. Low-mass dwarf spheroidal galaxies are key objects for our understanding of the chemical evolution of the pristine Universe and the Local Group of galaxies. Abundance ratios in stars of these objects can be used to better understand their star formation and chemical evolution. Aims. We r...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/3983

Repositorio Universidad Andrés Bello
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François, P. ,  Monaco, L. ,  Bonifacio, P. ,  Moni Bidin, C. ,  Geisler, D. ,  [Abundance ratios of red giants in low-mass ultra-faint dwarf spheroidal galaxies] ,  Abundance ratios of red giants in low-mass ultra-faint dwarf spheroidal galaxies
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?

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