DCN (3–2) position-velocity maps. Upper panel: emission along the velocity gradient at the IRAS 0038 + 6312 source. Contours are − 3, 3, 5, 7, ..., 13 times the rms noise level of the map, 0.03 Jy beam⁻¹. The purple lines indicate a keplerian velocity distribution. Lower panel: emission along the large velocity gradient passing through the center of the toroid traced by the dust continuum emission. Contours are − 3, 3, 6, 9, ..., 24 times the rms noise level of the map, 0.03 Jy beam⁻¹.