Two-dimensional surface density profiles for the a4-h.07-.25s model. The dashed white circles are again of radius r = 0.6 au and r = 1.5 au, respectively.In this model, the gap edge more closely follows the inner circle. However, the gap still shows eccentric behaviour. At the location of the outer planet, which we here have marked with a black dot, spiral waves driven by the giant planets are clearly visible.
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