HJ’s radial structure at four different points in the simulation, with the first three columns corresponding to panels a), b), and d) in Figure 4, while the rightmost column occurs shortly after planet disruption. Top panels: Density profile. Bottom panels: Entropy, defined as ln(p/ρ^γ) where p and ρ are pressure and density in cgs units, and γ = 5/3 is the adiabatic exponent. Bound planet SPH particles are plotted as black dots, while ablated planetary material is shown as orange dots. The n = 3/2 polytrope used for modelling the HJ is in blue. The red line shows a shifted stellar profile, plotted from the planet’s current centre of mass to show the local conditions encountered by the planetary material. In the rightmost column, the origin is taken to be the stellar centre since the HJ has completely disrupted.