2D velocity maps for objects with apparently large-scale rotational motion gas motion. The continuum light distribution of broad-band images are overplotted as thin solid black contours for comparison. A “longslit” velocity curves along the apparent major kinematic axis is extracted from the maps as described in the text. A thick solid black line indicates the orientation of the major kinematic axis. The radial velocity are estimated for each spaxel by modelling the corresponding emission line with a Gaussian profile. The vertical dashed line highlights the position of the QSO along the synthetic slit and the horizontal dashed line indicates the measured velocity zero-point of the velocity curve.