Example of an Hα line profile for the central spaxel of region 1. The main panel shows the observed spectrum (black lines) within the Hα window. The red line shows the fitted Gaussian profiles for the Hα and [N II] λ 6583 lines, and the bold red intervals are the continuum windows we used to fit the continuum. The bottom panel shows the residual of the fit. The inset show the σ_Hα map (in a large scale in the top right panel of Fig. 8). The blue courser indicates the single spaxel where the spectrum was taken. The blue circles label the regions we analyzed (see details in the text).