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Fig. 15.

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Comparison of the +340 d spectrum of SN 2017hcc with late-time spectra of SN 1998S (Fassia et al. 2001; Pozzo et al. 2004) and SN 2010jl (Borish et al. 2015). Phases are given against discovery date, except in the case of SN 2017hcc, where explosion epoch is used.

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