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arXiv:astro-ph/0402542 (astro-ph)
[Submitted on 23 Feb 2004 (v1), last revised 25 Feb 2004 (this version, v2)]

Title:Predicting Planets in Known Extra-Solar Planetary Systems I: Test Particle Simulations

Authors:Rory Barnes, Sean N. Raymond
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Abstract: Recent work has suggested that many planetary systems lie near instability. If all systems are near instability, an additional planet must exist in stable regions of well-separated extra-solar planetary systems to push these systems to the edge of stability. We examine the known systems by placing massless test particles in between the planets and integrating for 1-10 million years. We find that some systems, HD168443 and HD74156, eject nearly all test particles within 2 million years. However we find that HD37124, HD38529, and 55Cnc have large contiguous regions in which particles survive for 10 million years. These three systems, therefore, seem the most likely candidates for additional companions. Furthermore HD74156 and HD168443 must be complete and therefore radial velocity surveys should only focus on detecting more distant companions. We also find that several systems show stable regions that only exist at nonzero eccentricities.
Comments: 8 pages, 6 figures, 2 tables, submitted to ApJ
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0402542
  (or arXiv:astro-ph/0402542v2 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0402542
Journal reference: Astrophys.J. 617 (2004) 569-574
Related DOI: https://doi.org/10.1086/423419

Submission history

From: Rory Barnes [view email]
[v1] Mon, 23 Feb 2004 23:53:51 UTC (388 KB)
[v2] Wed, 25 Feb 2004 20:58:37 UTC (388 KB)
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