Evolution of model A with Rg = 2Rd, merging with the c = 25 satellite on a planar, very radial orbit, at different times during the merger. The top rows show the face-on and edge-on, respectively, view of the gas in the disk (contours at 0.25, 1, 4, and 16 × 1020 N cm-2) with the gas that is currently forming stars highlighted in green (see colorbar for relative values). The third and fourth rows from the top show the old stellar component in red, and newly formed star particles in black. The bottom panels show the gas contours with the gas velocity perpendicular to the contour plane.
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