Left-panel: Hα velocity field derived from the analysis of the H ii regions for UGC 9965. Central-panel: best model fitted to the velocity map using a simple arctan velocity curve, and fitting the inclination, position angle and maximum rotational velocity. Right-panel: residual of the subtraction of the model to the velocity map. Each plotted symbol in each panel represent an individual H ii region. The circles represent those H ii regions below the Kauffmann et al. (2003) demarcation line in the classical BPT diagram (Baldwin et al. 1981), and the squares corresponds to those ones located in the intermediate region between that line and the Kewley et al. (2001) one, as described later in the text. The size of the symbols are proportional to the Hα intensity.