Isochrones and iso-mass curves predicted by BHAC15. Shown are the 10, 20, 50, 75, 150, and 600 Myr isochrones (dash-dotted lines from left to right), while one iso-mass is drawn as a solid line every 0.1 M_⊙ from 0.1 (left) to 1 M_⊙ (right). The 50, 75, and 150 Myr isochrones correspond to possible ages for AB Dor-MG, and are drawn in red. The blue shaded areas correspond to the observed values and their error bars for each component of system GJ 2060, A and B.