Particle distribution of the BD projected in the 2D cylindrical plane for the A scenarios, at the end of the simulations: t = 10 689 s and t = 8059 s in the head-on and grazing collision cases (left and central, respectively) and t = 38 402 s for the merger scenario (right). The semicircles represent the original solar radius (solid black line) and the bottom of the convective zone at ∼70% of the solar radius (solid purple line). The density is color-coded.