Accretion luminosity versus stellar luminosity for the IC 348 sample. Accretors (detections) are shown as light blue circles and nonaccretors (upper limits) as dark blue triangles. Systems with primordial thick disks from C. J. Lada et al. (2006) are highlighted as gray squares. Dotted lines indicate constant L_acc/L_⋆ = 1, 0.1, 0.01,  and 0.001. The light blue band is the fit to the accretors only, the gray band to the disk-hosting systems, and the dark blue band to all members.