Top panels: HI intensity maps from the observed cube (left), model cube (middle) and residual cube (right) of NGC 2824. The cross and the dashed line indicate the galaxy center and position angle, respectively. The beam is shown in the bottom left corner. The physical scale is illustrated in the bottom right corner. The contours correspond to 3σ_pseudo, 6σ_pseudo, and so on. The outermost contour of the model is plotted in blue over the observed intensity map for comparison. Bottom panels: position-velocity diagrams taken along the major and minor axes from the observed cube (left), model cube (middle) and residual cube (right). The white squares show our derived rotation curve. The outermost contour of the model is plotted in blue over the observed PV diagrams for comparison. The density contours in the PV diagrams correspond to −1.5σ, −3σ (dashed) and 1.5σ, 3σ, 6σ, and so on (solid), where σ is the measured noise in the cube (see Table 2).