Title:
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Supernova Progenitor Constraints from Circumstellar Interaction: Type II
(Stockholm Observatory preprint No. 86)


Authors:
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Robert J. Cumming  &  Peter Lundqvist  (Stockholm Observatory)


Abstract:
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All types of supernovae (SNe), except Type Ia, have been observed to 
interact with their immediate circumstellar medium (CSM). This interaction 
can reveal their progenitor's histories, and constrain our ideas about the 
evolution of massive stars. As examples of the latest progress in this areas, 
we present some new results on two SNe: a 3D picture of the triple-ring 
nebula around SN 1987A, and observations of the less well-known but rather 
intriguing SN 1994W.In the process we introduce Type IIn supernovae (SN IIn; 
Schlegel 1990) as an important new probe of massive star evolution.


To appear in:
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Advances in Stellar Evolution, ed. R.T. Rood & A. Renzini (Cambridge Univeristy
Press)