RESEARCH
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The Impact of Bulges on the Radial Distribution of Supernovae in Disc Galaxies

A. A. Hakobyan, A. G. Karapetyan, L. V. Barkhudaryan, G. A. Mamon, D. Kunth, A. R. Petrosian, V. Zh. Adibekyan, L. S. Aramyan, M. Turatto

Abstract
We present the results of the analysis of the impact of bulges on the radial distributions of the different types of supernovae (SNe) in the stellar discs of host galaxies with various morphologies. We find that in Sa–Sm galaxies, all core-collapse (CC) and vast majority of SNe Ia belong to the disc, rather than the bulge component. The radial distribution of SNe Ia in S0–S0/a galaxies is inconsistent with their distribution in Sa–Sm hosts, which is probably due to the contribution of the outer bulge SNe Ia in S0–S0/a galaxies. The radial distributions of both types of SNe are similar in all the subsamples of Sa–Sbc and Sc–Sm galaxies. These results confirm that the old bulges of Sa–Sm galaxies are not significant producers of Type Ia SNe, while the bulge populations are significant for SNe Ia only in S0–S0/a galaxies.

Keywords
Astrophysics - Astrophysics of Galaxies

Non-Stable Universe: Energetic Resources, Activity Phenomena, and Evolutionary Processes
Haik A. Harutyunian Areg M. Mickaelian

Astronomical Society of the Pacific
Volume 511, Page 202
2017 July

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Instituto de Astrofísica e Ciências do Espaço Universidade do Porto Faculdade de Ciências da Universidade de Lisboa
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia