Hertzprung-Russell diagram for our candidate members of Cha I and II with good fits, compared to the isochrones and mass tracks from Baraffe et al. (1998) (solid black lines and dashed red lines, respectively). The plotted isochrones correspond to ages of 1, 5, 10, 20, 50 Myr and 5 Gyr (from top to bottom), and the mass tracks to 1.2, 1, 0.5, 0.2, and 0.1 M_⊙ (from left to right). The cross in the bottom-left corner of the diagram indicates the typical error.