Stripped-envelope supernova rates and host-galaxy properties

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.

Conference proceeding submitted to Astronomy in Focus, Vol. 2 as part of the XXIXth IAU General Assembly, Focus Meeting 10: "Stellar explosions in an ever-changing environment"