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Title:
NLTE wind models of A supergiants
Authors:
Krticka, Jirí; Kubát, Jirí
Publication:
The A-Star Puzzle, held in Poprad, Slovakia, July 8-13, 2004. Edited by J. Zverko, J. Ziznovsky, S.J. Adelman, and W.W. Weiss, IAU Symposium, No. 224. Cambridge, UK: Cambridge University Press, 2004., p.23-28
Publication Date:
12/2004
Origin:
CUP
Keywords:
Stars: atmospheres, stars: early-type, stars: winds, outflows, radiative transfer
Comment:
ISBN: 0521850185
DOI:
10.1017/S1743921304004338
Bibliographic Code:
2004IAUS..224...23K

Abstract

We present new numerical models of line-driven stellar winds of A supergiants. Statistical equilibrium (NLTE) equations of the most abundant elements are solved, and properly obtained occupation numbers are used to calculate consistent radiative force and radiative heating terms. Wind density, velocity, and temperature are calculated as solutions of the model's hydrodynamical equations. Our models allow for the calculation of the wind mass-loss rate and terminal velocity.

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Physics
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