Upper panel: redshift distribution of the total sample of galaxy pairs. Lower panel: median projected distances, Me(r_p), and median radial velocity difference, Me(ΔV), for the different galaxy pair classes. Error bars corresponds to the standard deviations of r_p and ΔV distributions obtained for each class. Noninteracting pairs tend to have larger r_p distances than interacting pairs. On the other hand, r_p distributions for red and blue pairs, as well as higher- and lower-luminosity pairs, are all in agreement with the total sample r_p distribution.