PRUGNIEL, Philippe; KOLEVA, Mina; OCVIRK, Pierre; LE BORGNE, Damien; SOUBIRAN, C.

doi:10.1017/S1743921307007454

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PRUGNIEL, Philippe
Centre de Recherche Astrophysique de Lyon [CRAL]

KOLEVA, Mina
Centre de Recherche Astrophysique de Lyon [CRAL]
Софийски университет = Sofia University

OCVIRK, Pierre
Софийски университет = Sofia University

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Ce document a été publié dans

2007IAUS..241...68P - Proceedings of the International Astronomical Union, 2007IAUS..241...68P - Proceedings of the International Astronomical Union, Stellar Populations as Building Blocks of Galaxies, 2006, La Palma - Tenerife. 2007, vol. 241, n° 2, p. 68-72

Cambridge University Press,

Résumé en anglais

The stellar population models dramatically progressed with the arrival of large and complete libraries, ELODIE, CFLIB (=Indo-US) and MILES at a relatively high resolution. We show that the quality of the fits is not anymore limited by the size of the stellar libraries in a large range of ages (0.1 to 10 Gyrs) and metallicities (-2 to +0.4 dex). The main limitations of the empirical stellar libraries are (i) the coverage of the parameters space (lack of hot stars of low metallicity), (ii) the precision and homogeneity of the atmospheric parameters and (iii) the non-resolution of individual element abundances (in particular [$\alpha$/Fe]). Detailed abundance measurements in the large libraries, and usage of theoretical libraries are probably the next steps, and we show that a combination between an empirical (ELODIE) and a theoretical library (Coelho et al. 2005) immediately improves the modeling of ($\alpha$-enhanced) globular clusters.< Réduire

Mots clés en espagnol

galaxies: abundances

globular clusters: general

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Analysis of stellar populations with large empirical libraries at high spectral resolution

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