Mathematics – Probability
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....103.1788v&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 103, no. 6, June 1992, p. 1788-1803.
Mathematics
Probability
47
Galactic Evolution, H Ii Regions, Star Formation, Supernovae, Astronomical Photometry, Charge Coupled Devices, Galactic Nuclei, Wolf-Rayet Stars
Scientific paper
Results are reported from a statistical study carried out to constrain the various models for the progenitors of supernovae of types Ia, Ib/c, and II. Star-formation regions in late-type galaxies are traced out by H II regions, imaged through photographic and CCD observations, and possible supernova association with these regions is based on the ratio of the angular separation of each supernova from its nearest H II region to the angular extent of the H II region in the direction of the supernova. The specific problems of supernova classification and positional uncertainties, as well as the probability of chance superposition, are also considered. It is suggested that type Ia supernovae do not arise from massive short-lived stellar populations. Type Ib/c and type II supernovae are very likely to be associated with H II regions and therefore with massive stellar progenitors.
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