Collisional Evolution of meter-to-km sized planetesimals in MMR
Description: Collisional evolution of a swarm of planetesimals (small colored circles) with initial size r = 1 km injected in the 4:3 MMR (right most vertical dashed line) with a 2 Earth mass planet (large black circle). The total mass in 10,000 tracers representing a total of ~475x106 (r = 1 km) planetesimals (~47,500 planetesimals per tracer) is 2 times the main asteroid belt mass (~10-3 Earth masses, DeMeo & Carry 2013). The vertical dashed lines show all first order MMRs from 20:10 to 11:10 (gray) and from 10:9 to 4:3 (black), as well as the distance from the Sun from where planetesimals are eliminated from the simulation (a = 0.98 au -- red). The horizontal dashed line in black (bottom panels) indicates 1 km for reference.