Fig. 17.
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Selection of spectra showing the evolution of the Hα line centre. The centres have been shifted slightly based on the position of the 6300.31 Å skyline, except in the case of +32 d and +330 d ALFOSC spectra and the +272 d EFOSC spectrum which have been shifted based on the position of the the 5577.34 Å line as the 6300.31 Å line was not detectable.
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