Accretion in the Early Kuiper Belt. II. Fragmentation
Accretion in the Early Kuiper Belt. II. Fragmentation
We describe new planetesimal accretion calculations in the Kuiper Belt that include fragmentation and velocity evolution. All models produce two power-law cumulative size distributions, NC ∝ r-2.5 for radii ≲0.3–3 km and NC ∝ r-3 for radii ≳1–3 km. The power-law indices are nearly independent of the initial mass in …