Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-20T00:29:07.213Z Has data issue: false hasContentIssue false
  • English
  • Français

Observational tests for overshoot and opacity enhancement based on massive stars

Published online by Cambridge University Press:  04 August 2017

G. Bertelli ,
A. Bressan  and
C. Chiosi
G. Bertelli
Affiliation:
Institute of Astronomy, Padua, Italy National Council of Research (C.N.R.), Italy
A. Bressan
Affiliation:
International School for Advanced Studies, Trieste, Italy
C. Chiosi
Affiliation:
Institute of Astronomy, Padua, Italy International School for Advanced Studies, Trieste, Italy

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

It is shown that a moderate increase in the opacity due to heavy elements in models of massive stars, incorporating convective overshoot and mass loss by stellar wind, can remove the well known discrepancy between theoretical expectation and observed frequencies of luminous stars in the HR diagram. These models in fact extend their main sequence band far beyond the classical limit.

Type
II. EVOLUTION OF MASSIVE STARS EVOLUTION AND MODELS
Information
Symposium - International Astronomical Union , Volume 105: Observational Tests of the Stellar Evolution Theory , 1984 , pp. 333 - 336
Copyright
Copyright © Reidel 1984 

References

Bertelli, G., Bressan, A., Chiosi, C., 1983, Astron. Astrophys. in press Google Scholar
Bressan, A., Bertelli, G., Chiosi, C., 1981, Astron. Astrophys. 102, 25 Google Scholar
Carson, T.R., 1976, Ann. Rev. Astron. Astrophys. 14, 95 CrossRefGoogle Scholar
Cox, A.N., Stewart, J.N., 1970, Astrophys. J. Suppl. 19, 243 CrossRefGoogle Scholar
Garmany, C.D., Conti, P.S., Chiosi, C., 1982, Astrophys. J. 263, 777 Google Scholar
Humphreys, R.M., 1978, Astrophys. J. Suppl. 38, 309 CrossRefGoogle Scholar
Maeder, A., Lequeux, J., Azzopardi, M., 1980, Astron. Astrophys. 90, L17 Google Scholar
Meylan, G., Maeder, A., 1982, Astron. Astrophys. 108, 148 Google Scholar
Simon, N.R., 1982, Astrophys. J. 260, L87 CrossRefGoogle Scholar
Stothers, R., Chin, C.W., 1977, Astrophys. J. 211, 189 CrossRefGoogle Scholar
Stothers, R., Chin, C.W., 1978, Astrophys. J. 225, 939 Google Scholar