SIMBAD references

2004MNRAS.354L..13K - Mon. Not. R. Astron. Soc., 354, L13-L17 (2004/October-3)

On the nature of the circumstellar medium of the remarkable Type Ia/IIn supernova SN 2002ic.


Abstract (from CDS):

We present results from the first high-resolution, high signal-to-noise ratio spectrum of SN 2002ic. The resolved Hα line has a P Cygni-type profile, clearly demonstrating the presence of a dense, slow-moving (∼100 km/s) outflow. We have additionally found a huge near-infrared excess, hitherto unseen in Type Ia supernovae. We argue that this is due to an infrared light-echo arising from the pre-existing dusty circumstellar medium. We deduce a circumstellar medium mass probably exceeding 0.3 Mproduced by a mass-loss rate greater than several times 10–4 M/yr. For the progenitor, we favour a single-degenerate system where the companion is a post-asymptotic giant branch star. As a by-product of our optical data, we are able to provide a firm identification of the host galaxy of SN 2002ic.

Abstract Copyright: 2004 RAS

Journal keyword(s): circumstellar matter - supernovae: general - supernovae: individual: SN 2002ic - stars: winds, outflows - dust, extinction

Nomenclature: Fig.3: [KMA2004] A (Nos A-B).

Simbad objects: 10

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