Stripped-envelope supernova rates and host-galaxy properties

TL;DR

This study analyzes the rates of stripped-envelope supernovae in different host galaxies, revealing that less massive galaxies are less efficient at producing these supernovae, which constrains progenitor models.

Contribution

It provides a re-analysis of supernova rates showing a correlation between galaxy mass and supernova production efficiency, offering new constraints on progenitor scenarios.

Findings

Galaxies with stellar mass < 10^10 M_sun are less efficient at producing SNe Ibc.

The observed correlation constrains progenitor models of stripped-envelope supernovae.

Abstract

The progenitors of stripped-envelope supernovae (SNe Ibc) remain to be conclsuively identified, but correlations between SN rates and host-galaxy properties can constrain progenitor models. Here, we present one result from a re-analysis of the rates from the Lick Observatory Supernova Search. Galaxies with stellar masses less than $\sim 10^{10}~{\rm M_\odot}$ are less efficient at producing SNe Ibc than more massive galaxies. Any progenitor scenario must seek to explain this new observation.