^3DBAROLO maps of the observed CO(2–1) mean velocity field (first-order moment, left panel), the fitted model of a rotating disk with fixed PA, inclination (see Table 4 and text), systemic velocity, and kinematic center (middle panel), and the residual mean-velocity field (right panel). The FoV is 10″ × 10″, as in Fig. 1. The color bars indicate line-of-sight velocities in units of km s⁻¹. The contours for the velocities in the left and middle panels are in steps of 50 km s⁻¹. Right panel: the contours are the CO(2–1) intensity (zeroth-order moment map) on a linear scale.