Spatial distribution of gas surface density (top row), grown dust surface density (middle row), and maximal dust grain size (bottom row) shown for four models: C1 (first column), C2 (second column), C3 (third column) and C4 (fourth column). Tails are shown at 10.3 kyr after the launch of the intruder. The post-collisional tail structures are marked with the black and yellow contour lines. The star symbols indicate the position of the intruder. The gas and dust surface densities are in log g cm⁻², the maximum dust size is in log cm.