The winds of the hot massive first stars

Details The winds of the hot massive first stars The winds of the hot massive first stars

2005-09-07

arxiv.org/abs/astro-ph/0509171v1

Astronomy and Astrophysics

Astrophysics

15 pages, accepted for publication in Astronomy & Astrophysics

Scientific paper

10.1051/0004-6361:20053289

We study dynamical aspects of circumstellar environment around massive zero-metallicity first stars. For this purpose we apply our NLTE wind models. We show 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 also discussed. Finally, we estimate the importance of hydrogen and helium lines for shutting off the initial accretion onto first stars and its influence on initial mass function of first stars.

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