A new determination of the frequency of supernovae

Details A new determination of the frequency of supernovae A new determination of the frequency of supernovae

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...190...10c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 190, no. 1-2, Jan. 1988, p. 10-16.

Astronomy and Astrophysics

Astrophysics

54

Galactic Structure, Supernova Remnants, Supernovae, Irregular Galaxies, Light Curve, Luminosity, Spiral Galaxies

Scientific paper

New determinations of the frequency of supernovae, obtained using the material of the Asiago Supernova Search, are presented. The method of determining a "control time" and a detailed analysis of the light curves allowed to obtain absolute frequencies both for SN I and SN II. The influence of some selection effects is reviewed and taken into account. It is shown that the frequency of SNe (in SNu (1 SNu = 1 SN per 100 yr per 1010LB_sun;)) increases from early to late type galaxies, SN II occurring only in spiral and irregular galaxies. The enhancement of the rate of SN I in spiral galaxies could be due to the existence of SN I with massive progenitors (SN I-b).

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