Logarithm of the ratio between the accretion luminosity and the stellar luminosity as a function of log T_eff (left panel). The black dashed line represents the boundary below which the impact of chromospheric emission on the observed accretion signatures becomes dominant. The symbols follow the same color-coding as in Fig. 1. EW of the Hα emission line as a function of SpT (right panel). We show the chromospheric-dominated boundary from Fang et al. (2009) with a black dotted line and the one from White & Basri (2003) with a dash-dotted line. We also show the saturation limit from Barrado y Navascués & Martín (2003) with a dashed line. In both panels we highlight the sources that may have a significant contribution in the measured accretion properties from the chromospheric activity with large empty black circles. A small offset in log T_eff (left panel) and SpT (right panel) has been applied to all sources for clarity.