Face-on gas and dust surface density, in units of g cm⁻², from the Phantom simulation with an initial planet mass of 1.5 M_Jup and a final planet mass of 2.0 M_Jup after ≈4 × 10⁴ yr (≈560 planet orbits). Gas density is displayed in the top-left corner, and the remaining panels present the surface density for the 11 simulated dust grain sizes. The bigger central green dot represents the star, and the smaller green dot indicates the planet position. Images were produced using the tool Splash (Price 2007).