LBV Eruptions Triggered and Powered by Binary Interaction

Details LBV Eruptions Triggered and Powered by Binary Interaction LBV Eruptions Triggered and Powered by Binary Interaction

2010-09-22

arxiv.org/abs/1009.4307v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4 pages, 1 figure, to appear in proceedings for "Binary Star Evolution: Mass Loss, Accretion and Mergers"

Scientific paper

We suggest that major Luminous Blue Variable (LBV) eruptions are a result of a periastron passage interaction with the secondary star. The interaction must take place when the primary envelope is in an unstable phase. In our model the mass transferred to the secondary accounts for the energy and light curve of the eruption. We propose that all major LBV eruptions are triggered by stellar companions, and that in extreme cases a short duration event with a huge mass transfer rate can lead to a bright transient event on time scales of weeks to months (a `supernova impostor')

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