Fig. A.2
Channel maps of the emission of the SO 32→ 21 (color map) and the main component of the NH2D 11,1a→ 10,1s (white contours) lines. The images have been created by merging the NOEMA data with the short spacing obtained with the IRAM 30 m telescope. The channel velocity is marked at the top of the panel. Red crosses indicate the positions studied in detail in this Letter.
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