Massive stars in galaxies
The relationship between the morphologic type of a galaxy and the evolution of its massive stars is explored, reviewing observational results for nearby galaxies. The data are presented in diagrams, and it is found that the massive-star populations of most Sc spiral galaxies and irregular galaxies are similar, while those of Sb spirals such as M 31 and M 81 may be affected by morphology (via differences in the initial mass function or star-formation rate). Consideration is also given to the stability-related upper luminosity limit in the H-R diagram of hypergiant stars (attributed to radiation pressure in hot stars and turbulence in cool stars) and the goals of future observation campaigns. 88 references.
- Research Organization:
- Minnesota Univ., Minneapolis
- OSTI ID:
- 6323511
- Journal Information:
- Publ. Astron. Soc. Pac.; (United States), Vol. 99
- Country of Publication:
- United States
- Language:
- English
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