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arXiv · 1112.0513

Spectral models of stellar populations resolved in chemical abundances

Philippe Prugniel·Mina Koleva
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Abstract

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 [α/Fe]. We used a semi-empirical approach that combines the observed spectra with synthetic stellar spectra. We tested the models using them to derive [α/Fe] in galaxies and star clusters using full spectrum fitting. The present models are available from http://ulyss.univ-lyon1.fr

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Philippe Prugniel, Mina Koleva. 2011-12-02. Spectral models of stellar populations resolved in chemical abundances. https://doi.org/10.1017/s1743921312008629

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