The Next Union Compilation of Type Ia Supernovae

In a series of papers (Kowalski (ApJ, 2008), Amanullah (ApJ, 2010)) we have developed techniques to combine multiple datasets, search for tensions between datasets, quantify systematic errors, and to propagate this understanding into the cosmology fits. Here, we present refinements to our analysis, and the addition of new supernovae. We also discuss applications for future ambitious surveys.

This work has been supported by the Office of Science, U.S. Department of Energy, through contract DE-AC02-05CH11231 and in part by NASA through grants associated with HST-GO-10496.