Fig. 2
Fit to the continuum of the optical spectrum obtained at + 56 d after R-band maximumcompared to a spectrum of the Type IIn SN 2010jl at a similar phase. The fit wasobtained by varying the amount of the extinction for SN 2015da in order to have aBB temperature comparable with that computed for SN 2010jl. We first fixed RV = 3.1 and then let it vary within the RV = 2−4 range.
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