Position-velocity diagrams of ¹²CO J = 6−5 for several cuts, indicated in the upper left panel, which represents the integrated flux map (the arrows indicate the sense of the offsets in the cuts). The cut positions are also indicated, when appropriate, in other panels. For the integrated flux, the first contour is 20 mJy km s^-1, with a logarithmic jump of a factor 3. For the P-V cuts, the contours are always the same as in the corresponding channel maps. The dark areas in the horizontal cuts indicate the P-V quadrants where we expect that emission tends to concentrate in the case of rotation.