Exploring the Divisions and Overlap between AGB and Super-AGB Stars and Supernovae

We discuss the mass ranges over which we find AGB and super-AGB stars. The most massive super-AGB stars are candidate progenitors for type II core-collapse SNe. We discuss the two supernovae, SN1980K and SN2003gd that provide some restrictions on the upper mass limit of super-AGB stars.