Isochrone fitting of HD 132563 system. The Girardi et al. (2002) 3.0, 5.0, 5.5, and 6.0 Gyr Z = 0.013 (the nominal metallicity of the system) isochrones are shown, together with the observational data. The larger error bars (dotted lines) refer to the absolute error (dominated by error on distance); the smaller error bars (continuous lines) refer to errors on the difference between the components.