‘fingerprints’ on the radial distributions of Type Ia and CC SNe.

In our earlier study (, hereafter H09), we attempted to find differences in the radial distributions of SNe in barred and unbarred spiral host galaxies . No significant differences were found, most probably due to small number statistics, inhomogeneous data sets of SNe and their hosts, and unsatisfying considerations for the relations between the bar lengths, bulge sizes, and morphological types of SNe host galaxies. On the other hand, @1997ApJ...483L..29W attempted to estimate the contribution from bulge components of spiral host galaxies to the entire radial distribution of SNe Ia. They noted that the stellar bulges in spirals are not efficient producers of Type Ia SNe [see also @2015MNRAS.448..732A]. But again, the above mentioned impact of bars on the radial distributions of young and old stellar populations in the discs was not considered.

The aim of this article is to address these questions properly through a study of the radial distributions of Type Ia and CC (Ibc and II) SNe in a well-defined and homogeneous sample of 500 nearby SNe and their low-inclined and morphologically non-disturbed S0–Sm galaxies from the coverage of Sloan Digital Sky Survey-III [SDSS-III; @2014ApJS..211...17A].

In 