Left panel: radius R (blue dashed line), core radius R_core (red solid line), and capture radius R_capt (green dotted line) as a function of time. The inset figure is a zoom-in onto the late evolution and shows the radius as found in this work (solid line), in Baraffe et al. (2003) (dashed), and in Burrows et al. (1997) (dotted). Right panel: total luminosity L as a function of time (red solid line). The dashed line shows Baraffe et al. (2003), and the dotted one is Burrows et al. (1997).