KRTIČKA, Jiří and Jiří KUBÁT. The mass loss from hot Pop III stars. In First Stars III. Melville, USA: American Institute of Physics, 2008, p. 254-256. ISBN 978-0-7354-0509-7.
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Basic information
Original name The mass loss from hot Pop III stars
Name in Czech Ztráta hmoty horkých hvězd populace III
Authors KRTIČKA, Jiří (203 Czech Republic, guarantor) and Jiří KUBÁT (203 Czech Republic).
Edition Melville, USA, First Stars III, p. 254-256, 3 pp. 2008.
Publisher American Institute of Physics
Other information
Original language English
Type of outcome Proceedings paper
Field of Study 10308 Astronomy
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/00216224:14310/08:00024699
Organization unit Faculty of Science
ISBN 978-0-7354-0509-7
UT WoS 000254472200059
Keywords in English stars: mass-loss; stars: early-type; stars: circumstellar matter; stars: winds outflows
Tags stars: circumstellar matter, stars: early-type, stars: mass-loss, stars: winds outflows
Tags International impact
Changed by Changed by: prof. Mgr. Jiří Krtička, Ph.D., učo 8714. Changed: 25/6/2009 19:54.
Abstract
We test the possibility of winds blowing from hot H-He flrst stars, driven by either line or continuum processes. Because the material in the atmospheres of first stars is mostly ionized, the radiative force is too small to accelerate the wind. The radiative force due to the continuum transitions is also not able to drive a wind. We study the possibility of expulsion of individual heavier elements from the atmosphere, and the influence of the radiative force on the circumstellar environment of flrst stars. It is shown that some of these stars may have winds if their atmospheres are enriched by CNO elements. We also discuss the implications of our results in the evolution of Pop III stars and for models of the reionization of the Universe.
Abstract (in Czech)
Ověřujeme, zda horké vodíkovo-heliové první hvězdy měly hvězdné větry urychlované čarami nebo absorpcí v kontinuu. Protože je látka v atmosférách prvních hvězd příliš ionizovaná, tyto hvězdy neměly žádné větry urychlované absorpcí záření v čarách. Ukázali jsme, že tyto hvězdy mohou mít větry, pokud jsou jejich atmosféry obohaceny produkty jaderného hoření.
Links
GA205/07/0031, research and development projectName: Hvězdné větry prvních hvězd ve vesmíru
Investor: Czech Science Foundation, Stellar winds of first stars in the Universe
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