Relation of M_r vs. R_maj (top panels) and scatter of the size distributions (lower panels) for galaxies with different Sérsic indices. From left to right are red, blue, and all the galaxies. The red and blue galaxies are separated following Fig. 2. The error bars are the error in the likelihood fitting. The Sérsic indices of each group are [0.5 − 1.5, 1.5 − 2.5, 2.5 − 3.5, 3.5 − 4.5, 4.5 − 5.5, 5.5 − 6.5].