Average collisional velocities in the high inclination γF = 0.78(45°) case between equally (panel 1) and differently sized planetesimals (panel 2). Left panel: 10 km–10 km collisions (green-solid); 1 km–1 km collisions (blue-solid); 100 m–100 m collisions (red-solid). Right panel: 10 km–1 km (green-solid); 10 km–100 m (blue-solid); 1 km–100 m (red-solid). Threshold velocities for catastrophic disruption corresponding to the different size-combinations for the strong aggregates (dashed line) are also shown. Relative velocities have also been calculated using a larger orbit width Δa = 2 × 10-3 AU (dotted lines). Panels 3 and 4: collision count for orbital width Δa = 2 × 10-4 AU and Δa = 2 × 10-3 AU, respectively. The line colours and styles in panels 3 and 4 are as follows: green-solid (10 km–10 km); blue-solid (1 km–1 km); red-solid (100 m–100 m); green-dashed (10 km–1 km); blue-dashed (10 km–100 m); red-dashed (1 km–100 m).
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