| KRTIČKA, Jiří a Jiří KUBÁT. NLTE models of line-driven stellar winds I. Method of calculation and first results for O stars. Online. Astronomy and Astrophysics. Les Ulis Cedex, France: EDP Sciences, 2004, roč. 2004, č. 417, s. 1003-1016. ISSN 0004-6361. [citováno 2024-04-24] |
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@article{553842,
author = {Krtička, Jiří and Kubát, Jiří},
article_location = {Les Ulis Cedex, France},
article_number = {417},
keywords = {stars: winds; outflows -- stars: mass-loss -- stars: early-type -- hydrodynamics},
language = {eng},
issn = {0004-6361},
journal = {Astronomy and Astrophysics},
title = {NLTE models of line-driven stellar winds I. Method of calculation and first results for O stars},
url = {http://www.edpsciences.org/articles/aa/abs/2004/15/aa0030/aa0030.html},
volume = {2004},
year = {2004}
}
TY - JOUR
ID - 553842
AU - Krtička, Jiří - Kubát, Jiří
PY - 2004
TI - NLTE models of line-driven stellar winds I. Method of calculation and first results for O stars
JF - Astronomy and Astrophysics
VL - 2004
IS - 417
SP - 1003-1016
EP - 1003-1016
PB - EDP Sciences
SN - 00046361
KW - stars: winds
KW - outflows -- stars: mass-loss -- stars: early-type -- hydrodynamics
UR - http://www.edpsciences.org/articles/aa/abs/2004/15/aa0030/aa0030.html
N2 - New numerical models of line-driven stellar winds of late O stars are presented. Statistical equilibrium (NLTE) equations of the most abundant elements are solved. Properly obtained occupation numbers are used to calculate consistent radiative force and radiative heating terms. Wind density, velocity and temperature are calculated as a solution of model hydrodynamical equations. Contrary to other published models we account for a multicomponent wind nature and do not simplify the calculation of the radiative force (e.g. using force multipliers). We discuss the convergence behaviour of our models. The ability of our models to predict correct values of mass-loss rates and terminal velocities of selected late O stars (mainly giants and supergiants) is demonstrated. The systematic difference between predicted and observed terminal velocities reported in the literature has been removed. Moreover, we found good agreement between the theoretical wind momentum-luminosity relationship and the observed one for Cyg OB2 supergiants.
ER -
KRTIČKA, Jiří a Jiří KUBÁT. NLTE models of line-driven stellar winds I. Method of calculation and first results for O stars. Online. \textit{Astronomy and Astrophysics}. Les Ulis Cedex, France: EDP Sciences, 2004, roč.~2004, č.~417, s.~1003-1016. ISSN~0004-6361. [citováno 2024-04-24]
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