HR: 10:50h
AN: P32A-03    [Abstracts]
TI: Can Habitable Terrestrial Planets Co-exist With Hot Jupiters?
AU: Lunine, J
EM: jlunine@lpl.arizona.edu
AF: Lunar and Planetary Lab, 1629 E. University Blvd., Tucson, AZ 85721-0092 United States
AU: Raymond, S
EM: raymond@astro.washington.edu
AF: University of Washington, Astronomy Box 351580, Seattle, WA 98195 United States
AU: * Quinn, T
EM: trq@astro.washington.edu
AF: University of Washington, Astronomy Box 351580, Seattle, WA 98195 United States
AB: ``Hot jupiters,'' giant planets with orbits very close to their parent stars, are thought to most plausibly form at large orbital distances and then migrate inward via interactions with the gaseous protoplanetary disk. If a giant planet forms and migrates inward with sufficient rapidity, then terrestrial planets may form in the system. We present results of simulations of terrestrial planet formation in the presence of hot jupiters, broadly defined as having orbital radii within 0.5 AU of the parent star. We show that terrestrial planets similar to those in the Solar System can form around stars with hot jupiters, and can have water contents equal to or higher than the Earth's. For small orbital radii of hot jupiters (e.g. 0.15, 0.25 AU) potentially habitable planets can form, but for semi-major axes of 0.5 AU or greater their formation is suppressed. We show that the presence of a giant planet external to the terrestrial planet zone does not necessarily enhance the water content of the terrestrial planets, but does descrease both their formation and water delivery timescales. We speculate that asteroid belts may exist interior to the terrestrial planets in systems with hot jupiters.
DE: 8125 Evolution of the Earth
DE: 5455 Origin and evolution
DE: 5749 Origin and evolution
DE: 6040 Origin and evolution
DE: 1060 Planetary geochemistry (5405, 5410, 5704, 5709, 6005, 6008)
SC: Planetary Sciences [P]
MN: 2004 AGU Fall Meeting