Stellar population parameters in NGC 3593 (upper panels) and NGC 4550 (lower panels). Left panels: maps of the age (top), metallicity (middle), and α-enhancement (bottom) of the two stellar counter-rotating components, as derived by fitting the Thomas et al. (2011) models to the measured Lick indices. Dashed ellipses show the elliptical annuli used to bin the data and extract the radial profiles shown in the right panels. Orientation is the same as in Figs. 2 and 3. Right panels: radial profiles of the total luminosity-weighted values within concentric ellipses of the age (top), metallicity (middle), and α-enhancement (bottom). Red and blue lines represent the main and secondary stellar components, respectively. The green line in the [Z/H] panels represents the metallicity of the ionized-gas component.