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Destruction of Binary Minor Planets During Neptune Scattering

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arxiv 1009.3495 v1 pith:2Q35TJB2 submitted 2010-09-17 astro-ph.EP

Destruction of Binary Minor Planets During Neptune Scattering

classification astro-ph.EP
keywords beltkuiperscatteringbinariesbinarycomponenteventsmechanism
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The existence of extremely wide binaries in the low-inclination component of the Kuiper Belt provides a unique handle on the dynamical history of this population. Some popular frameworks of the formation of the Kuiper Belt suggest that planetesimals were moved there from lower semi-major axis orbits by scattering encounters with Neptune. We test the effects such events would have on binary systems, and find that wide binaries are efficiently destroyed by the kinds of scattering events required to create the Kuiper Belt with this mechanism. This indicates that a binary-bearing component of the cold Kuiper Belt was emplaced through a gentler mechanism or was formed in situ.

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Cited by 1 Pith paper

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