Wind emission of OB supergiants and the influence of clumping

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Authors	KRAUS Michaela KUBÁT Jiří KRTIČKA Jiří
Year of publication	2008
Type	Article in Proceedings
Conference	Clumping in hot-star winds
MU Faculty or unit	Faculty of Science
Citation
Web	http://opus.kobv.de/ubp/frontdoor.php?source_opus=1796&la=de
Field	Astronomy and astrophysics
Keywords	stars: winds; stars: mass-loss; stars: early-type; - hydrodynamics
Description	The influence of the wind to the total continuum of OB supergiants is discussed. For wind velocity distributions with beta > 1.0, the wind can have strong influence to the total continuum emission, even at optical wavelengths. Comparing the continuum emission of clumped and unclumped winds, especially for stars with high beta values, delivers flux differences of up to 30% with maximum in the near-IR. Continuum observations at these wavelengths are therefore an ideal tool to discriminate between clumped and unclumped winds of OB supergiants.
Related projects:	Stellar winds of first stars in the Universe