Median values of gas velocity dispersion σ_m in galaxies. The black circles show σ_m as a function of the spectroscopic stellar mass M_sp for individual galaxies with the R distribution, the blue plus signs denote galaxies with the B distribution, and red squares galaxies with the spots of enhanced σ. The solid line shows the median value of σ_m in galaxies with the R distribution, and the dashed line shows the median value of σ_m for galaxies with the B distribution. The σ_m for galaxies with R and B distributions are from Pilyugin et al. (2021).