Constraining Supernova Ia Progenitors by their Locations in Host Galactic Disc

TL;DR

This paper investigates the relationship between the locations of Type Ia Supernovae within host galaxy discs and their progenitor ages, confirming a correlation between progenitor age and supernova brightness.

Contribution

It provides observational evidence linking supernova locations in galactic discs to progenitor ages, supporting the double-detonation model predictions.

Findings

Confirmed correlation between SN brightness and progenitor age.

Analyzed supernova locations within galactic discs.

Estimated progenitor population ages based on locations.

Abstract

Among the diverse progenitor channels leading to Type Ia Supernovae (SNe Ia), there are explosions originating from white dwarfs with sub-Chandrasekhar masses. These white dwarfs undergo detonation and explosion triggered by primary detonation in the helium shell, which has been accreted from a companion star. The double-detonation model predicts a correlation between the age of the progenitor system and the near peak brightness: the younger the exploding progenitors, the brighter the SNe. In this paper, we present our recent achievements on the study of SNe Ia properties in different locations within host galactic discs and the estimation of their progenitor population ages. Observationally, we confirm the validity of the anticipated correlation between the SN photometry and the age of their progenitors.