Abstract
We present model spectra of stellar populations with variable chemical composition. We derived the [α/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. © 2012 International Astronomical Union.
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Prugniel, P., & Koleva, M. (2011). Spectral models of stellar populations resolved in chemical abundances. In Proceedings of the International Astronomical Union (Vol. 7, pp. 16–19). Cambridge University Press. https://doi.org/10.1017/S1743921312008629
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