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Nebulae around Luminous Blue Variables – large bipolar variety

Published online by Cambridge University Press:  12 July 2011

Kerstin Weis
Kerstin Weis*
Affiliation:
Astronomisches Institut, Ruhr-Universität Bochum, Universitätsstr. 150, 44781, Bochum, Germany email: kweis@astro.rub.de
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Abstract

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During the LBV phase—a short transitional phase of only the very massive stars—strong stellar winds sometimes accompanied by eruptions form small circumstellar LBV nebulae around a substantial number of LBV stars. Analyzing the morphology and and kinematics of the LBV nebulae even weakly bipolar components can be detected, leading to the conclusion that about 50% have—to some degree—a bipolar structure. A global overview of our current observational knowledge of LBV nebulae is summarized, including their morphology, sizes and kinematic parameters.

Keywords

stars: variables: otherstars: circumstellar matter

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