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We improve estimates of stellar mass and mass-weighted average age of Type Iasupernova (SN Ia) host galaxies by combining UV and near-IR photometry withoptical photometry in our analysis. Using 206 SNe Ia drawn from the fullthree-year SDSS-II Supernova Survey (median redshift of z {\approx} 0.2) andmulti-wavelength host-galaxy photometry from SDSS, GALEX, and UKIDSS, wepresent evidence of a correlation (1.9{\sigma} confidence level) between theresiduals of SNe Ia about the best-fit Hubble relation and the mass-weightedaverage age of their host galaxies. The trend is such that older galaxies hostSNe Ia that are brighter than average after standard light-curve correctionsare made. We also confirm, at the 3.0{\sigma} level, the trend seen by previousstudies that more massive galaxies often host brighter SNe Ia after light-curvecorrection.

Improved Constraints on Type Ia Supernova Host Galaxy Properties using Multi-Wavelength Photometry and their Correlations with Supernova Properties