Fig. 14.
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Hα line emission FWHM (top) and pseudo-equivalent width (bottom) compared to other luminous Type II SNe from the P23 sample (adapted from P23). Mean values for regular SNe II from the sample of Gutiérrez et al. (2017) are presented in grey (with the 1σ standard deviation plotted as a shaded region). In the top panel, we also plot the Hα FWHM of SN 2018ivc (from Bostroem et al. 2020).
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