Close-in giant planets (e.g., ``hot Jupiters'') are thought to form far from their host stars and migrate inward, through the terrestrial planet zone, via torques with a massive gaseous disk. Here we simulate terrestrial planet growth during and after giant planet migration. Several-Earth-mass planets also form interior to the migrating jovian planet, analogous to recently discovered ``hot Earths.'' Very-water-rich, Earth-mass planets form from surviving material outside the giant planet's orbit, often in the habitable zone and with low orbital eccentricities. More than a third of the known systems of giant planets may harbor Earth-like planets.
- Pub Date:
- September 2006
- 13 pages, 3 figures, 1 table. Resolution of one figure has been degraded. For full-resolution images, see http://lasp.colorado.edu/~raymond/RMS-pre.pdf