Emission-line Diagnostics of Nearby HII Regions Including Supernova Hosts

Understand

We present a new model of the optical nebular emission from HII regions by combin- ing the results of the Binary Population and Spectral Synthesis (bpass) code with the photoion- ization code cloudy (Ferland et al.

• 1998).
• We explore a variety of emission-line diagnostics of these star-forming HII regions and examine the effects of metallicity and interacting binary evo- lution on the nebula emission-line production.
• We compare the line emission properties of HII regions with model stellar populations, and provide new constraints on their stellar populations and supernova progenitors.