Open Access

Fig. B.1

image

Extracted ROI spectra (1σ errors bars)in velocity space for three analysis methods. Each spectrum has been fitted with the spectral model of Eq. (5, thick solid lines), similar to Fig. 3. The fitted Doppler-shifts and their uncertainties are marked by the hatched areas in the respective colours. The spectra are consistent with each other, and their fitted Doppler-shifts coincide.

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