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Astronomy and Astrophysics Supplement Series, Vol. 117, May II 1996, 113-125
Evolutionary sequences of stellar models with new radiative opacities. VI.
L. Girardi
Send offprint requests to: C. Chiosi
, A. Bressan 
, C. Chiosi 
,
G. Bertelli 
and
E. Nasi 
Department of Astronomy, Vicolo Osservatorio 5, 35122 Padua,
Italy
Instituto de Física, UFRGS, C.P. 15051,
91501-970 Porto Alegre RS, Brazil
Astronomical Observatory, Vicolo Osservatorio 5, 35122 Padua,
Italy
Fellow of the National Council of Research CNR
Received July 28; accepted November 7, 1995
Abstract:
We present a large grid of stellar evolutionary models with the initial chemical composition
. These tracks
are conceived to extend the grid of stellar models described in the previous
papers of this series, and are computed with the new radiative opacities by
Iglesias et al. (1992) and convective overshoot. The tracks span the range of
initial masses from 
to 
, and extend from the
zero age main sequence (ZAMS) till very advanced evolutionary phases.
Specifically, low- and intermediate-mass stars are followed till the beginning
of the thermally pulsing regime of the asymptotic red giant branch phase
(TP-AGB), while massive stars are followed till the core C-ignition. With
respect to previous papers of this series, these models incorporate a number
of small modifications in the input physics, particularly on the equation of
state, which now incorporates the effect of Coulomb interactions between
charged particles. The effect of these modifications is discussed.
The corresponding theoretical isochrones are presented.
Key words: stars: evolution --- stars: interiors --- stars: Hertzsprung--Russel (HR) diagram --- stars: abundances
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