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Fig. E.2

Left: evolution of the Doppler velocity at maximum absorption evaluated for the pW01 feature (see Fig. 13) attributed to the Mg ii λλ2796, 2803 doublet for SN 1992A, SN 2011fe, SN 2011iv, and SN 2013dy. Right: blue-wing velocity measurements of the Mg ii feature for the sameobjects.
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