Evolutionary sequences of stellar models with new radiative opacities. VI. Z=0.0001.

Details Evolutionary sequences of stellar models with new radiative opacities. VI. Z=0.0001. Evolutionary sequences of stellar models with new radiative opacities. VI. Z=0.0001.

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26as..117..113g&link_type=abstract

Astronomy and Astrophysics Supplement, v.117, p.113-125

Astronomy and Astrophysics

Astrophysics

160

Stars: Evolution, Stars: Interiors, Stars: Hertz-Russel (Hr) Diagram, Stars: Abundances

Scientific paper

We present a large grid of stellar evolutionary models with the initial chemical composition [Z=0.0001, Y=0.23]. 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 0.6Msun_ to 100Msun_, 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.

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