David Jones

Studying Host Galaxy Biases and Measuring w with Over 1,000 Photometrically Identified Type Ia Supernovae from Pan-STARRS

The Pan-STARRS medium deep survey observed over 5,000 supernova (SN) candidates across 70 square degrees of sky. Over the last two years, we have measured spectroscopic host galaxy redshifts for over 60% of these candidates, including over 1,000 cosmologically useful SNe Ia. In the context of these data, I discuss the effect host galaxy biases and core-collapse SN contamination will have on a precise measurement of the dark energy equation of state, w.