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Paper: LBV Nebulae as Tracers of Stellar Instabilities
Volume: 465, Four Decades of Massive Star Research - A Scientific Meeting in Honor of Anthony J. Moffat
Page: 213
Authors: Weis, K.
Abstract: During their life massive stars may enter a variable, unstable phase as they turn into luminous blue variable (LBV) stars. LBVs are characterized by their photometric and spectroscopic variability as well as strong stellar winds which in some cases are accompanied by energetic eruptions. A consequence of the high mass loss and wind-wind interactions are small circumstellar nebulae around LBVs. Analysis of these nebulae can be used to learn more about the late stages of stellar evolution and the underlying physics of the instability present in the stars. Here an overview of our current knowledge of LBVs and their nebulae will be given, as well as a comparison with nebulae formed during the Wolf-Rayet phase. In this context the role which stellar rotation and the stellar environment plays will also be addressed.
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