Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...233..267s&link_type=abstract
Astrophysical Journal, Part 1, vol. 233, Oct. 1, 1979, p. 267-279.
Astronomy and Astrophysics
Astrophysics
87
Early Stars, Main Sequence Stars, Stellar Evolution, Stellar Mass Ejection, Stellar Winds, Abundance, Helium, Hydrogen, Schwarzschild Metric, Stellar Models, Stellar Structure, Supergiant Stars
Scientific paper
The effect of a stellar wind on the evolution of stars in the mass range from 15 to 120 solar masses is investigated. All the stellar models are constructed with the use of Cox-Stewart opacities. Four possible cases of mass loss are considered: (1) no mass loss at all; (2) substantial mass loss from stars in all stages of evolution; (3) heavy mass loss from red supergiants only; and (4) sudden and very heavy mass loss from luminous yellow supergiants. The assumption of mass loss during the main-sequence phase of evolution is found to lead to a lowering of the luminosity and, unless the mass loss is extremely heavy, of the effective temperature as well. A comparison of the adopted mass-loss rates with observed rates suggests that stellar winds are probably not an important factor in the evolution of main-sequence stars and supergiants unless the initial masses are greater than about 30 solar masses.
Chin Chao-Wen
Stothers Richard
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