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The influence of inhomogeneities on hot star wind model predictions

Published online by Cambridge University Press:  01 April 2008

J. Krtička ,
L. Muijres ,
J. Puls ,
J. Kubát  and
A. de Koter
J. Krtička
Affiliation:
Institute of Theoretical Physics and Astrophysics, Masaryk University, Brno, Czech Republic
L. Muijres
Affiliation:
Astronomical Institute, “Anton Pannekoek”, University of Amsterdam, Amsterdam, The Netherlands
J. Puls
Affiliation:
Universitätssternwarte München, München, Germany
J. Kubát
Affiliation:
Astronomický ústav, Ondřejov, Czech Republic
A. de Koter
Affiliation:
Astronomical Institute, “Anton Pannekoek”, University of Amsterdam, Amsterdam, The Netherlands
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Abstract

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We study the effect of wind inhomogeneities (clumping) on O star wind model predictions. For this purpose we artificially include clumping into our stationary NLTE wind models. As a result of the inclusion of optically thin clumps the radiative line force is increased compared to corresponding unclumped models, with a similar effect on either the mass-loss rate or the terminal velocity. When the clumps are allowed to be optically thick in continuum, on the other hand, the radiative force and consequently the mass-loss rate decreases alternatively.

Keywords

Stars: mass lossstars: early-typehydrodynamics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S252: The Art of Modeling Stars in the 21st Century , April 2008 , pp. 283 - 287
Copyright
Copyright © International Astronomical Union 2008

References

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