Comparison of the Gliese 586 stars (dots marked Aa, Ab, and B) with theoretical evolutionary tracks and isochrones for a metallicity of 0.15 matching Gl586Aa. The full lines are taken from the grid of Spada et al. (2013) computed with YREC. Shown are pre-main sequence and post-main sequence tracks for the masses labeled and two isochrones of age 0.1 and 10 Gyr. For comparison, the dotted and dash-dotted lines are the 0.9-M_⊙ main-sequence tracks from Basti (Pietrinferni et al. 2004) and Parsec (Bressan et al. 2013), respectively.