Fig. 5.
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Line profiles of He I, O I, [O I], [Ca II], and Ca II NIR within the spectra of SN 2017ati. The dashed lines indicate the velocities corresponding to the rest wavelengths of the emission lines at λλ5016, 5876, 7774, 6300, 7291, and 8751. The epoch of each spectrum is given in the rest frame, relative to the estimated explosion date.
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