The influence of inhomogeneities on hot star wind model predictions

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Authors	KRTIČKA Jiří MUIJRES Lianne PULS Joachim KUBÁT Jiří DE KOTER Alex
Year of publication	2008
Type	Article in Proceedings
Conference	The Art of Modelling Stars in the 21st Century
MU Faculty or unit	Faculty of Science
Citation
web	http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=2451852
Field	Astronomy and astrophysics
Keywords	stars: winds; outflows stars: mass-loss; stars: early-type; hydrodynamics
Description	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.
Related projects:	Stellar winds of first stars in the Universe Mass-loss rate predictions for hot stars