Volume 446, Number 3, February II 2006
|Page(s)||1039 - 1049|
|Section||Stellar structure and evolution|
|Published online||20 January 2006|
The winds of hot massive first stars
Ústav teoretické fyziky a astrofyziky, Přírodovědecká fakulta Masarykovy univerzity, 611 37 Brno, Czech Republic e-mail: firstname.lastname@example.org
2 Astronomický ústav, Akademie věd České republiky, 251 65 Ondřejov, Czech Republic
Accepted: 21 August 2005
We study dynamical aspects of the circumstellar environment around massive zero-metallicity first stars. We apply our NLTE wind models showing that the hydrogen-helium stellar wind from stationary massive first generation (Population III) stars (driven either by the line (bound-bound) or continuum (bound-free and free-free) transitions) is unlikely. The possibility of expulsion of chemically homogeneous wind and the role of minor isotopes are discussed. We estimate the importance of hydrogen and helium lines in shutting off the initial accretion onto first stars and its influence on the initial mass function of first stars.
Key words: stars: mass-loss / stars: winds, outflows / stars: early-type / ISM: general
© ESO, 2006
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