Other
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.4018p&link_type=abstract
American Astronomical Society, DPS meeting #42, #40.18
Other
Scientific paper
Transneptunian multiple systems represent some of the most dynamically complex systems in the solar system. With large Hill radii and no significant solar radiation effects (e.g. YORP), binary, triple, and quadruple systems can be stable in the Kuiper Belt. This allows for a very high detected binary fraction ( 30% in the cold classical belt), which most formation models predict is primordial. However, solar torques can dynamically excite these systems' mutual orbits through the Kozai resonance, therefore bringing them close enough that tidal forces can quickly shrink the orbit's semimajor axis. This process is accelerated by low material strengths, but halted for close orbits if the objects have significantly non-spherical shapes. We will present simulations showing that some binary pairs should be presently Kozai oscillating, others should be circular (even if highly-inclined), and a few are possibly in-between, as a function of their material strength. In addition, we extend this numerical model to triple and quadruple systems, as a probe of which configurations are most stable relative to solar and tidal forces.
Grundy Will
Porter Simon
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