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Fig. 7

image

Redshifted features of the Na I D profile of SN 2013gh along with the Voigt profiles obtained with VPFIT. The model telluric spectra of the respective epochs are plotted for reference above the continua. It can be seen that the feature at v ≈ 73 km s-1 probably changes in depth, whereas the other features only appear to change because of differences in the resolution of the spectra.

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