Interferometric maps obtained with IRAM NOEMA for the ¹³CO J=2-1 transition for the different 3.25 km s⁻¹ -wide velocity channels. The central LSRK velocity (in km s⁻¹ ) for each channel is shown in the upper left corner of the corresponding panel. Note that these maps have been rotated 49° clockwise so the symmetry axis of the nebula is in the vertical direction. The Field of view is 6″.5×15″.0. Clean-beam size is 0″.51×07 78, with a PA of 76°, and is displayed in the inset at the lower-left corner. Contours are drawn at 20 mJy beam⁻¹ intervals. The false-colour intensity scale displayed in Jy beam⁻¹ is also indicated right of the last panel.