Fig. 10
Spectral comparison among our PTF and CCCP long-rising SNe II, SN 1987A (from Phillips et al. 1988) and SN 2006au (from Taddia et al. 2012). The top panel includes spectra taken at early epochs, in the central panel we show spectra obtained around peak. The bottom panel presents spectra taken on the tail of the light curves.
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