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Centro de Astrofísica da Universidade do Porto
Joint HELAS and CoRoT/ESTA Workshop
20-23 November 2006, CAUP, Porto - Portugal

Diffusion in CLES

Sylvie Theado
Université de Liège, Belgium

Abstract. The most advanced version of CLES (Code Liégeois d'Evolution Stellaire) can compute the abundance variations due to microscopic diffusion for a dozen species. The diffusion velocities are computed following the theory developped by Thoul et al. (1994). In this talk I will rapidly remind the fundamental equations which govern the chemical evolution and the diffusion theory. I will present their implementation in CLES and the numerical technique used to compute the diffusion-induced abundance variations.

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