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Fig. 5

image

Intrinsic BV color-curve templates for SNe IIb, Ib and Ic, as obtained from the best fit (solid lines) of Eq. (1) to the observed colors of nine minimally-reddened objects. Dashed lines are the associated 1σ uncertainties. The three templates are over-plotted in the bottom-right panel, showing that there are differences among the SE SN sub-types at all phases. The template uncertainties (highlighted in the bottom-right sub-panel) are lower in the first month after maximum, and then increase over time.

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