Underluminous SNe Ia are fainter and decline more rapidly than the bulk of the SNIa population. They represent a challenge for progenitor scenarios and explosion mechanisms. A vital tool for determination of such explosion models, particularly the amount of 56Ni synthesized, is the light-curve rise time. In this study, we present the light curves of 53 underluminous photometrically identified SNe Ia in the Supernova Legacy Survey at 0.1
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