Explosions of LBV and Post-LBV Stars
Abstract
In this contributed talk I presented the observational evidence for supernova (SN) explosions of stars in the luminous blue variable (LBV) and the immediate post-LBV evolutionary phases. We now have compelling indications that two recent SNe of Type II-"narrow" (IIn) were the explosions of LBVs, including the direct identification of the progenitor LBV for one of these examples. A recent SN of Type Ic exploded as a helium star, two years after the powerful LBV outburst of its progenitor. These cases were also discussed by other presenters at this Workshop in some detail. I instead focus more on another example, SN2001em, which was first identified as a Type Ib/c, but later evolved to Type IIn. I argue that the progenitor of this SN exploded as a Wolf- Rayet (WR) star, following an eruptive LBV phase. Furthermore, I suggest that two "SN impostors," i.e., extragalactic massive stars observed to undergo pre-SN LBV eruptions (similar to η Carinae), may well have evolved to the WR phase in real time.
Additional Information
© 2010 Astronomical Society of the Pacific. Thanks to Tom Matheson, Weidong Li, Chris Stockdale, Alex Filippenko, Ryan Chornock, Ryan Foley, and Dave Pooley.Attached Files
Published - vanDyk2010p13502Hot_And_Cool_Bridging_Gaps_In_Massive-Star_Evolution.pdf
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Additional details
- Eprint ID
- 23368
- Resolver ID
- CaltechAUTHORS:20110418-132151193
- Created
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2011-05-11Created from EPrint's datestamp field
- Updated
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2019-10-03Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)
- Series Name
- ASP Conference Series
- Series Volume or Issue Number
- 425