Properties of Type II protoplanets formed in the simulations (same as in Fig. A.4, that is, fragments that do not reach a density of 10⁻³ g cm⁻³ at their centres). One of these protoplanets (Type IIa; Run 13) undergoes a second collapse and shows evidence of a second core in the radial infall profile. This is depicted by open stars in figures. However, most of these protoplanets do not undergo second collapse (Type IIb). The short vertical line in (d) indicates the position of the second core for Run 13.