HR diagram (upper panel: effective temperature vs. M_V; lower panel: effective temperature vs. M_K) for stars in the NaCo-LP sample. Stars with different ages are plotted with different colors. Overplotted are pre-main sequence, solar-metallicty isochrones for 5, 12, 30, 70, and 200 Myr (from Bressan et al. 2012). The two B-type stars HIP 10602 and HIP 12394 and the Li-rich giant HD 99409 are outside plot limits.