log L_* − log L_acc relationship for the four regions studied in this work: Ophiuchus (top left panel, pink), Lupus (top right panel, dark cyan), Cha-I (bottom left panel, orange), and Upper Scorpius (bottom right panel, blue). The data from the literature are shown in different colors, while the data presented in this work are shown with black circles. CFHTWIR-Oph 77 is represented in the top left panel with an empty black square to highlight its subluminous nature. We show the single and segmented power-law fits we have performed to the relationship in each region with solid and dashed lines, respectively. The light solid lines represent examples from the posterior distribution of the single power-law fit. The gray dotted lines mark the regions of constant L_acc/L_* ratio (labeled in the lower-right panel).