Recent developments in supernova statistics and models.

Details Recent developments in supernova statistics and models. Recent developments in supernova statistics and models.

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992auja....4..209b&link_type=abstract

Aust. J. Astron., Vol. 4, No. 4, p. 209 - 212

Astronomy and Astrophysics

Astronomy

Scientific paper

From Zwicky's 1938 estimate of one supernova per 600 years, to recent findings indicating one supernova every nine years in a typical galaxy, there is a definite trend towards smaller mean intervals, as detection limits improve. Type I supernovae were originally all thought to be caused by accretion on old Population II dwarf stars. They have now been split into types SN Ia, SN Ib, and SN Ic. The SN Ib and SN Ic are lower-luminosity events, and make up a large fraction of observed supernovae, even though selection effects are still thought to lead to large numbers being missed.

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