Fig. 4
Position-velocity diagram along the disk major axis of the CN emission. The dashed curve is a Keplerian velocity profile for a stellar mass of 0.61 M⊙ at an inclination of 87° and a systemic velocity of 3.70 km s−1 LSRK. The VLSRK scale is with respect to the brightest HF component (B) detected at frequency 226.8747813 GHz. Labels A, B, and C indicate the brightest HF transitions (see Table 1). Cyan ellipses correspond to the regions from which we extracted the spectra analyzed in Sect. 3.2.2.
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