Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...311..701f&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 311, Dec. 15, 1986, p. 701-707.
Astronomy and Astrophysics
Astrophysics
316
Stellar Mass Ejection, Stellar Models, Stellar Rotation, Stellar Winds, Centrifugal Force, Equations Of Motion, Hot Stars, Wind Velocity
Scientific paper
A model of a radiation-driven stellar wind is presented that includes a correction factor for the finite size of the star as well as the centrifugal force due to the star's rotation. The addition of the finite disk factor reduces the line force near the star and increases it far from the star, which lowers the mass-loss rate, increases the terminal velocity, and makes the velocity law more gradual. These changes bring the wind model into much closer agreement with observations of hot star winds. The decrease in the ratio of terminal velocity to escape velocity in the B supergiants can be explained as due to a change in the mixture of driving lines.
Abbott David C.
Friend David B.
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