From: Amara Graps (amara@amara.com)
Date: Thu Jul 31 2003 - 02:33:49 MDT
http://xxx.lanl.gov/abs/astro-ph/0307512
Astrophysics, abstract
astro-ph/0307512
From: Avi Mandell <mandell@astro.psu.edu>
Date: Tue, 29 Jul 2003 22:27:12 GMT (93kb)
Survival of Terrestrial Planets in the Habitable Zone in the Presence of
Jovian Migration
Authors: Avi M. Mandell, Steinn Sigurdsson (Penn State University)
Comments: 7 pages, 3 figures, submitted to ApJL
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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References and citations for this submission:
-- Amara Graps, PhD Istituto di Fisica dello Spazio Interplanetario (IFSI) Istituto Nazionale di Astrofisica (INAF), Adjunct Assistant Professor Astronomy, AUR, Roma, ITALIA Amara.Graps@ifsi.rm.cnr.it
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