Statistics of extragalactic supernovae.
Abstract
It is shown that supernovae of Type II are concentrated in spiral arms, whereas those of Type I show no preference for spiral-arm regions. Rediscussion of available supernova statistics suggests that Tammann (1970) may have overestimated the dependence of supernova frequency on galaxy inclination. A study of the distribution of supernovae in elliptical galaxies indicates that the supernova rate per unit luminosity may be highest among (possibly metal-poor) stars in the halos of E galaxies. All galaxies in which supernovae are known to have occurred have been classified on the DDO system.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 1976
- DOI:
- 10.1086/154198
- Bibcode:
- 1976ApJ...204..519M
- Keywords:
-
- Elliptical Galaxies;
- Spiral Galaxies;
- Star Distribution;
- Supernovae;
- Frequency Distribution;
- Galactic Radiation;
- Galactic Structure;
- Light Curve;
- Luminous Intensity;
- Statistical Analysis;
- Stellar Spectra;
- Tables (Data);
- Astrophysics