Survival of Terrestrial Planets in the Presence of Giant Planet Migration

Details Survival of Terrestrial Planets in the Presence of Giant Planet Migration Survival of Terrestrial Planets in the Presence of Giant Planet Migration

2003-07-29

arxiv.org/abs/astro-ph/0307512v2

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures, emulateapj. ApJL in press, referee comments changes and edited for length

Scientific paper

10.1086/381245

The presence of ``Hot Jupiters'', Jovian mass planets with very short orbital periods orbiting nearby main sequence stars, has been proposed to be primarily due to the orbital migration of planets formed in orbits initially much further from the parent star. The migration of giant planets would have profound effects on the evolution of inner terrestrial planets in these systems, and previous analyses have assumed that no terrestrial planets survive after migration has occurred. We present numerical simulations showing that a significant fraction of terrestrial planets could survive the migration process, eventually returning to circular orbits relatively close to their original positions. A fraction of the final orbits are in the Habitable Zone, suggesting that planetary systems with close-in giant planets are viable targets for searches for Earth-like habitable planets around other stars.

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