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Fig. A.4.
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Evolution of the He II (λ4685.680 Å) and He I (λ5875.640 Å, λ6678.151 Å, and λ7065.190 Å) line profiles during the present outburst in the HRS/SALT spectra (medium-resolution mode: R ∼40000) and two FEROS spectra taken during the 2005 outburst. The red dashed vertical lines mark the systemic velocity.
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