WROCŁAW HELAS WEBPAGE

EVOLUTIONARY TRACKS of 1.6 to 20 MSun stellar models with new OPAL opacities

J. Daszyńska-Daszkiewicz, P. Walczak, Astronomical Institute, University of Wroc³aw

The evolutionary tracks have been calculated for stellar models from 1.8 up to 12 solar masses in the MS and early post-MS evolutionary stages.

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OPAL–OPAL opacities (Iglesias, C.A., Rogers, F.J., 1996, ApJ 464, 943)
AGSS09–Chemical Composition (Asplund, M., Grevesse, N., Sauval, A.J., Scott, P., 2009, ARA&A 47, 481A)
X–hydrogen abundance
Z–heavy element abundance
AC–MLT parameter (mixing-length theory); AC = alpha convective = lconv/Hp, where lconv - mixing length, Hp - local pressure scale height
AO–convective overshooting parameter; AO = alpha overshooting = dover/Hp, where dover - convective overshooting
V–initial equatorial rotational velocity [km/s]
REFERENCES:
  • Iglesias, C.A., Rogers, F.J., 1996, ApJ 464, 943
  • Asplund, M., Grevesse, N., Sauval, A.J., Scott, P., 2009, ARA&A 47, 481A
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