Supernova 2002ic: the collapse of a stripped-envelope, massive star in a dense medium ?

Details Supernova 2002ic: the collapse of a stripped-envelope, massive star in a dense medium ? Supernova 2002ic: the collapse of a stripped-envelope, massive star in a dense medium ?

2006-11-03

arxiv.org/abs/astro-ph/0611125v1

Astrophys.J.653:L129-L132,2006

Astronomy and Astrophysics

Astrophysics

Accepted for publication on ApJL

Scientific paper

10.1086/510667

We revisit the case of SN2002ic that recently revived the debate about the progenitors of SNeIa after the claim of the unprecedented presence of hydrogen lines over a diluted SNIa spectrum. As an alternative to the previous interpretation, we suggest that SN2002ic actually was a type Ic SN, the core collapse of a massive star which lost its hydrogen and helium envelope. In this scenario the observed interaction with a dense circumstellar material (CSM) is the predictable consequence of the intense mass-loss of the progenitor and/or of the presence of a gas rich environment. With this view we establish a link between energetic SNeIc and highly interacting SNeIIn and add some credits to the proposed association of some SNeIIn to GRBs.

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