Velocity profiles galaxies derived by radially averaging a 30° cone around the position angle derived from the SDSS images. The velocities are corrected for the inclination of the galaxies. The green lines show + and − v_rot (Table 8). The values for v_rot are shifted so they are symmetric around the observed velocity profiles. The shaded green areas show the errors on v_rot. Their classification as derived in Sect. 5.1 is given.