Core-collapse supernovae ages and metallicities

Thus, it is important to investigate the association between CCSNe and HII regions. In this paper, we present emission-line diagnostics of the stellar populations around nearby CCSNe, which include their host HII regions, from the Potsdam Multi-Aperture Spectrophotometer (PMAS)/PPak integral-field supernova hosts compilation (PISCO).

We then use bpass stellar population models to determine the age, metallicity and gas parameters for HII regions associated with CCSNe, contrasting models that either consider single-star evolution alone or incorporate interacting binaries. We find that binary-star models, which allow for ionizing photon loss, provide a more realistic fit to the observed CCSN hosts, with metallicities that are closer to those derived from the oxygen abundance in O3N2.