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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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