We present an analysis of the 258 confirmed Type Ia Supernovae (0.03 < z < 0.65) discovered over the full course of the Pan-STARRS1 (PS1) Medium Deep Survey. This sample is a subset of the 348 SNIa discovered by PS1 that can be used for the cosmology analysis. We present improvements to the PS1 photometry, astrometry and calibration that further reduce the systematic uncertainties in the PS1 SN Ia distances. We then discuss the combination of our PS1 sample with the full set of light curves from external samples to form the largest combined sample of SNIa. This analysis is the first to use the PS1 Supercal process that determines a global calibration solution to allow the combination of many different supernova samples. We will preview constraints on cosmological parameters with this combined sample. We will also discuss analysis of the larger PS1 photometric sample, as well as the low-z SNIa survey, called Foundation, that is currently being conducted with the Pan-STARRs telescope.
American Astronomical Society Meeting Abstracts #227
- Pub Date:
- January 2016