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Explosions of LBV and Post-LBV Stars

Van Dyk, Schuyler D. (2010) Explosions of LBV and Post-LBV Stars. In: Hot and Cool: Bridging Gaps in Massive-Star Evolution. ASP Conference Series. No.425. Astronomical Society of the Pacific , San Francisco, CA, pp. 73-78. ISBN 978-1-58381-730-8.

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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.

Item Type:Book Section
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Van Dyk, Schuyler D.0000-0001-9038-9950
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.
Group:Infrared Processing and Analysis Center (IPAC)
Series Name:ASP Conference Series
Issue or Number:425
Record Number:CaltechAUTHORS:20110418-132151193
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:23368
Deposited By: Tony Diaz
Deposited On:11 May 2011 20:43
Last Modified:03 Oct 2019 02:45

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