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We present bolometric light curves constructed from multi-wavelengthphotometry of Type Ia supernovae (SNe Ia) from the Carnegie Supernova Projectand the CfA Supernova Group, using near-infrared observations to provide robustconstraints on host galaxy dust extinction. This set of light curves form awell-measured reference set for comparison with theoretical models. Ejectedmass and synthesized $^{56}$Ni mass are inferred for each SN Ia from itsbolometric light curve using a semi-analytic Bayesian light curve model, andfitting formulae provided in terms of light curve width parameters from theSALT2 and SNooPy light curve fitters. A weak bolometric width-luminosityrelation is confirmed, along with a correlation between ejected mass and thebolometric light curve width. SNe Ia likely to have sub-Chandrasekhar ejectedmasses belong preferentially to the broad-line and cool-photospherespectroscopic subtypes, and have higher photospheric velocities and populateolder, higher-mass host galaxies than SNe Ia consistent with Chandrasekhar-massexplosions. Two peculiar events, SN 2006bt and SN 2006ot, have normal peakluminosities but appear to have super-Chandrasekhar ejected masses.

Probing type Ia supernova properties using bolometric light curves from the Carnegie Supernova Project and the CfA Supernova Group