Comparison of critical specific impact energies Qcrit. The scaling laws shown Fig. 7 are compared here with values found in previous studies (Benz & Asphaug 1999; Leinhardt & Stewart 2009, 2012). Also displayed are the specific energies Q of collisions involving bodies of similar size (mass ratio of 1:2) for the bi-lobe forming collisions in study by Jutzi & Asphaug (2015) with very low velocities (V ~ Vesc ~ 1 m/s) as well as for collisions with a velocity of V = 40 m/s, corresponding to the average random velocity in the primordial disk during the first 25 Myr in the model by Davidsson et al. (2016).
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