Definition of the radio-selected AGN candidates. We plot on the y axis the expected SFR that one would measure, assuming that all the radio luminosity can be attributed to star formation processes (SFR(L_rad); see Sect. 2.2.4). Similarly, on the x axis, the SFR is expected from Hα luminosity (SFR(Hα)). The black line corresponds to the location where SFR(L_rad) = SFR(Hα). The other colored lines (orange, red, and blue) correspond to our SFR excess definition in SFR(Hα) steps of 0.5, 1.0, and 1.5 dex (log(x_i)). We defined each sample of AGN-selected candidates by selecting the targets whose values (and error bars) are above the corresponding line (following SFR(L_rad)/SFR(Hα) = x_i) and we have colored them according to the colored lines (except for x_i = 0.0 dex, which corresponds to the yellow ones). We also show targets that did not satisfy any SFR-excess criteria (gray without marker) or did not pass the S/N criteria (gray with marker) for our kinematic analysis (see Sect. 3.2). The contours (dashed blue, light blue, and teal) represent the density where specific galaxy populations gather (SF, composite, non-radio-selected AGNs). The top and right-hand plots show the individual parameter distribution of these three galaxy populations.