Top panel: velocity dispersion ratio as a function of metallicity, FUV−NUV colors, and Hα luminosities. Bottom panel: flux ratio of the narrow and broad components as a function of metallicity, FUV−NUV colors, and Hα luminosities. The triangle symbols represent interacting galaxies (those that are tidally interacting with a nearby companion or are being affected by their environment; these are NGC 3031, NGC 4449, NGC 5194, NGC 5457, and NGC 3077). The open circle symbols represent galaxies that are disturbed kinematically due to the effect of e.g., star formation (NGC 1569, NGC 3521, and NGC 3627). The star symbols indicate non-interacting galaxies that have an anomalously high velocity dispersion (NGC 7331 and NGC 2841). The diamond shaped symbols represent non-interacting and non-disturbed galaxies where the dispersions measured on the opposite sides of the galaxies differ by more than 1.5 km s ⁻¹. (NGC 4826 and M81 DwB; see Section 5 for the choice of this value). Filled circle symbols represent our clean sample galaxies.