Isochrone fits to binaries 90 (RW Lac + TYC 3629-740-1) and 91 (HS Aur + BD+47 1350) of Torres et al. (2010) in the mass-radius (upper panel) and HR (lower panel) diagrams. The positions of the stars in those diagrams are shown with the error bars quoted by those authors. Isochrone fitting is performed visually. The numbers next to the isochrones are the initial metallicity Zinit and the logarithm of the age in years.
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