Top row and bottom row left: Velocity fields of the three CO transitions. The velocities are only shown for locations in which the S/N of the integrated emission is higher than 5. The contours show the continuum emission at the same frequency as the line emission of that particular panel (contour levels 1, 2, 4, … mJy beam⁻¹). Bottom row, right: Zoom-in of the CO(3-2) velocity field with iso-velocity contours (–200, –175, …, +200 km/s). The systemic velocity is indicated by the thick contour. The 262-GHz continuum is indicated by the red contour (levels 0.4, 0.8, 1.6, …, 12.8 mJy beam⁻¹). The beam size is indicated in the bottom left corner of each panel.