Formation and subsequent evolution of a 16 M_J object forming via core accretion with a radiatively efficient shock (cold start). The four panels show the temporal evolution of the total luminosity (internal  +  shock) (upper left), the radius (upper right), the central temperature (lower left) and the surface temperature (lower right). The dotted blue line shows the results obtained for the fiducial model as specified in Table 1. For the solid red line, the deuterium abundance was kept constant, while for the dashed green line, deuterium burning was disabled.