CIRCUMSTELLAR SHELLS IN ABSORPTION IN TYPE Ia SUPERNOVAE
Journal Article
·
· Astrophysical Journal (Online)
Progenitors of Type Ia supernovae (SNe) have been predicted to modify their ambient circumstellar (CSM) and interstellar environments through the action of their powerful winds. While there is X-ray and optical evidence for circumstellar interaction in several remnants of Type Ia SNe, widespread evidence for such interaction in Type Ia SNe themselves has been lacking. We consider prospects for the detection of CSM shells that have been predicted to be common around Type Ia SNe. Such shells are most easily detected in Na I absorption lines. Variable (declining) absorption is expected to occur soon after the explosion, primarily during the SN rise time, for shells located within {approx}1-10 pc of a SN. The distance of the shell from the SN can be determined by measuring the timescale for line variability.
- OSTI ID:
- 21313050
- Journal Information:
- Astrophysical Journal (Online), Journal Name: Astrophysical Journal (Online) Journal Issue: 2 Vol. 699; ISSN 1538-4357
- Country of Publication:
- United States
- Language:
- English
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