Publication details

NLTE wind models of hot subdwarf stars

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Authors

KRTIČKA Jiří KUBÁT Jiří

Year of publication 2010
Type Article in Periodical
Magazine / Source Astrophysics and Space Science
MU Faculty or unit

Faculty of Science

Citation
web http://www.springerlink.com/content/66056475v3427318/
Field Astronomy and astrophysics
Keywords Stars: winds outflows - Stars: mass-loss - Stars: early-type - Stars: horizontal-branch - Planetary nebulae: general
Description We calculate NLTE models of stellar winds of hot compact stars (central stars of planetary nebulae and subdwarf stars). The studied range of subdwarf parameters is selected to cover a large part of these stars. The models predict the wind hydrodynamical structure and provide mass-loss rates for different abundances. Our models show that CNO elements are important drivers of subdwarf winds, especially for low-luminosity stars. We study the effect of X-rays and instabilities on these winds. Due to the line-driven wind instability, a significant part of the wind could be very hot.
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