Fig. 5.
Panel a: rest-frame Mg − Mr and Panel b: Mr − Mi colours of PS16cgx compared to the evolution of Type Ia SNe (solid curves; Burns et al. 2014; Krisciunas et al. 2017) including both normal and 91T-like events, and normal Type Ic SNe (dotted curves; Stritzinger et al. 2018a,b; Taddia et al. 2018) from CSP. Colour points assuming no host galaxy extinction are shown with open symbols, and assuming an arbitrary host extinction of AV = 0.2 mag in grey symbols.
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