Models of type I supernovae and observations of SN 1981b.
Abstract
Photometry and spectroscopy results for the SN 1981b in NGC 4536 are examined and compared with SN I models. Three recent models for such SNs are discussed, two of which arise from the accreting white dwarf scenario and the third of which could be the result of single-star evolution. The observational results for SN 1981b are generally consistent with the carbon deflagration of an accreting white dwarf. The assumption of backbody emissivity at maximum light leads to a high luminosity, as expected for any model that synthesizes on the order of a solar mass of Ni-56. The spectra establish that intermediate mass elements were present with roughly solar relative abundances in the outer parts of the ejecta, and suggest that freshly synthesized iron was present in the inner parts.
- Publication:
-
Annals of the New York Academy of Sciences
- Pub Date:
- 1984
- DOI:
- 10.1111/j.1749-6632.1984.tb23353.x
- Bibcode:
- 1984NYASA.422..186B
- Keywords:
-
- Carbon Stars;
- Light Curve;
- Stellar Evolution;
- Stellar Spectrophotometry;
- Supernovae;
- White Dwarf Stars;
- Metallic Stars;
- Nickel Isotopes;
- Stellar Composition;
- Stellar Envelopes;
- Stellar Mass Accretion;
- Stellar Mass Ejection;
- Stellar Models;
- Astrophysics;
- Stellar Models:Supernovae;
- Supernova in NGC 4536 (1981b);
- Supernovae:Stellar Models