GALFIT-derived Sérsic index vs. absorption-corrected 2−10 keV X-ray luminosity of AGNs from both Chandra Deep Fields combined (white circle points). The contours show the density of points from 1000 draws of a mass-matched control sample of inactive galaxies. To place the control galaxies on this plot, the X-ray luminosity assigned to each control galaxy is that of the AGN to which it is matched, producing, in effect, a large simulated AGN sample with the same mass and X-ray luminosity distributions as the real AGNs. The four contour levels encompass 90%, 75%, 50% and 25% of the simulated AGNs in this plane.