My Fairy Tale

• 4-5 cores of 15 Earth-masses grow in the Jupiter-Saturn zone.
  
  
• The inner and outer most (+/- 1) start to accrete gas and open gaps.
  
  
• Waves generated at resonances in gas ring forces gas into gaps
  • The ring between the gas planets is removed.
  • Cores between gas giants cannot accrete gas.
  
  
• Jupiter-core-core-Saturn system can be stable for a long time.
  • We performed 4 runs.
  • Found lifetimes from 100Myr to 3Gyr, which includes 600Myr!
  
  
• The system goes unstable after 600Myr.
  • Uranus and Neptune get scattered outward,
  • Interaction with trans-Saturniuan disk leads to the Lunar Late-Heavy Bombardment.
  • Evolve to the current locations a la Thommes et al.