Spectral models of stellar populations resolved in chemical abundances

Autor:	Prugniel, Philippe, Koleva, Mina
Rok vydání:	2011
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1017/S1743921312008629
Popis:	We present model spectra of stellar populations with variable chemical composition. We derived the [alpha/Fe] abundance ratio of the stars of the most important libraries (ELODIE, CFLIB and MILES) using full spectrum fitting and we generated PEGASE.HR models resolved in [\alpha/Fe]. We used a semi-empirical approach that combines the observed spectra with synthetic stellar spectra. We tested the models using them to derive [\alpha/Fe] in galaxies and star clusters using full spectrum fitting. The present models are available from http://ulyss.univ-lyon1.fr Comment: Contributed talk, IAU Symp. 284, The Spectral Energy Distribution of Galaxies, Preston (UK), September 2011, eds. R. J. Tuffs and C. C. Popescu
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1112.0513 Zobrazit plný text záznamu View this record from Arxiv