Top panel: the bolometric light curves of SNe 2006V, 2006au and 1987A. Filled symbols show the luminosity resulting from the integration of the SEDs. The fit of the semi-analytic model from Imshennik & Popov (1992) is represented with dashed lines. Middle panel: temperature evolution as obtained through black-body fits to the SED for each photometric epoch. Bottom panel: photospheric velocity evolution for SNe 2006V, 2006au and 1987A. For clarity, the errors on temperature and velocity for SN 1987A have been omitted in the plot. These are of the same order as the errors for SNe 2006V and 2006au.