Terrestrial Planets in Hot-Jupiter Systems
It has long (at least 5 years) be thought that hot-Jupiter systems will not have terretrial planets.
- The giant planet would clear the terrestrial planet zone when it migrated through.
However, two groups have studied terrestrial planet formation as the giant planets migrates:
Fogg & Nelson and Raymond et al.
- They found the terrestrial planets can from both interior and exterior to the planet.
- As the giant planets migrates it scatters stuff inward and outward.
- Pre-existing planets can survive the migration.
- Small things scattered inward is circularized by gas disk material is plowed inward.
- Planets form inside giant planets very quickly.
- The stuff scattered outward is also circularized by gas settles back into disk.
- Enough to form planets on typical timescales.
Copyright: Lynette Cook