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Date and Time of the Query: 2019-08-18 T07:09:28 PDT
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For refcode 2009MNRAS.399..559A:
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NED Abstract

Copyright by Royal Astronomical Society. 2009MNRAS.399..559A Comparisons of the radial distributions of core-collapse supernovae with those of young and old stellar populations Anderson, J. P.; James, P. A. Abstract. We present observational constraints on the nature of core-collapse (CC) supernovae (SNe) through an investigation into their radial distributions with respect to those of young and old stellar populations within their host galaxies, as traced by H{alpha} emission and R-band light, respectively. We discuss results and the implications they have on the nature of SN progenitors, for a sample of 177 CC SNe. We find that the radial positions of the overall CC population closely follow the radial distribution of H{alpha} emission, implying that both are excellent tracers of star formation within galaxies. Within this overall distribution, we find that there is a central deficit of SNII which is offset by a central excess of SNIb/c. This implies a strong metallicity dependence on the relative production of the two types, with SNIb/c arising from higher metallicity progenitors than SNII. Separating the SNIb/c into individual classes, we find that a trend emerges in terms of progenitor metallicity going from SNII through SNIb to SNIc, with the latter arising from the highest metallicity progenitors. Key words: supernovae: general, galaxies: general, galaxies: statistics
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