Solutions to Hot Systems? (cont)

• We are attempting to use a modified version of SyMBA.
• We defined a new class of small object called tracers.
  • These small orbits directly feel the gravity of normal, big objects.
    • Their orbits are integrated using SyMBA.
  • The small objects do not feel each other's gravity.
  • The big objects will feel the effects of the small objects as if there were a lot of them
    (tracer swarms).
    
    • We use the standard dynamical friction formula.
    • Plus distant forces to account for secular friction.
• Generate new tracers during collisions of embryos.