Moderate Asphericity of the SN 2002ic Circumstellar Envelope
arXiv:astro-ph/0611302 · doi:10.1086/510767
Abstract
The polarization of SN 2002ic interacting with a dense circumstellar envelope is calculated in the context of the asymmetric version of a previously proposed spherical interaction model. The circumstellar envelope is taken to be oblate. The observed polarization (Wang et al. 2004) can be reproduced for an aspect ratio of 0.65-0.7 assuming inclination angles >60 degrees. This model predicts a weak sensitivity of the line profiles to the orientation, in agreement with the absence of significant variations of the line profiles among SN 2002ic-like supernovae. We propose a test for distinguishing between the binary and single star progenitor scenarios based upon the polarization distribution function for the growing sample of these events.
13 pages, 4 figs., ApJ, accepted
References in corpus (14)
- Evidence for an asymptotic giant branch star in the progenitor system of a type Ia supernova
- Nearby Supernova Factory Observations of SN 2005gj: Another Type Ia Supernova in a Massive Circumstellar Envelope
- Spectropolarimetry of SN 2001el in NGC 1448: Asphericity of a Normal Type Ia Supernova
- The type IIn supernova 1994W: evidence for the explosive ejection of a circumstellar envelope
- Have the Elusive Progenitors of Supernovae Type Ia Been Discovered?
- The properties of Supernova 1997cy associated to GRB970514
- On The Hydrogen Emission From The Type Ia Supernova 2002ic
- A single-degenerate model for the progenitor of the Type Ia supernova 2002ic
- Axisymmetric circumstellar interaction in supernovae
- Subaru Spectroscopy of the Interacting Type Ia Supernova SN 2002ic: Evidence of a Hydrogen-rich, Asymmetric Circumstellar Medium
- On the nature of the circumstellar medium of the remarkable type Ia/IIn supernova, SN 2002ic
- SN1999E: Another piece in the SN-GRB connection puzzle
- Circumstellar interaction of the type Ia supernova 2002ic
- Type Ia supernovae in dense circumstellar gas