A model for supernova 1993J.
Abstract
We test a "type IIb" model for SN 1993J and present computations of its fight curve (bolometric and in B, V bands). A good fit to first 50 days of the observed blue light curve gives the model involving an explosion of a giant with a mass 4.4 M_sun_ and a radius ~200 R_sun_ with energy 2 x 10^51^ erg. The mass of hydrogen (~1 M_sun_) is typical for SNe II-L and the mass of ^56^Ni is the same as in SN 1987 A. In our model the explosion epoch is in the interval March 28.0 - 28.2. We study the effects of a circumstellar envelope, formed by the presupernova superwind, upon the light curve.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- January 1994
- Bibcode:
- 1994A&A...281L..53B
- Keywords:
-
- Light Curve;
- Stellar Envelopes;
- Stellar Models;
- Supernovae;
- Astronomical Photometry;
- Giant Stars;
- Hydrogen;
- Nickel Isotopes;
- Radii;
- Stellar Mass;
- Stellar Winds;
- Astronomy