SN Ia properties using bolometric light curves

This set of light curves form a well-measured reference set for comparison with theoretical models. Ejected mass and synthesized ^56^Ni mass are inferred for each SN Ia from its bolometric light curve using a semi-analytic Bayesian light curve model, and fitting formulas provided in terms of light curve width parameters from the SALT2 and SNooPy light curve fitters.

A weak bolometric width-luminosity relation is confirmed, along with a correlation between ejected mass and the bolometric light curve width. SNe Ia likely to have sub-Chandrasekhar ejected masses belong preferentially to the broad-line and cool-photosphere spectroscopic subtypes, and have higher photospheric velocities and populate older, higher mass host galaxies than SNe Ia consistent with Chandrasekhar-mass explosions.