The drag-induced resonant capture for Kuiper Belt objects

Abstract It has been an interesting question as to why one-third of Kuiper Belt objects (KBOs) are trapped into the 3 : 2 resonance but, in contrast, only a few KBOs are claimed to be associated with the 2 : 1 resonance. In a model proposed by Zhou et al., the stochastic outward migration of the Nep...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2004-12, Vol.355 (4), p.L29-L32
Main Authors: Jiang, Ing-Guey, Yeh, Li-Chin
Format: Article
Language:English
Subjects:
celestial mechanics
Kuiper Belt
planetary systems
Solar system: formation
Solar system: general
stellar dynamics
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Summary:Abstract It has been an interesting question as to why one-third of Kuiper Belt objects (KBOs) are trapped into the 3 : 2 resonance but, in contrast, only a few KBOs are claimed to be associated with the 2 : 1 resonance. In a model proposed by Zhou et al., the stochastic outward migration of the Neptune could reduce the number of particles in the 2 : 1 resonance, and thus the objects in the 3 : 2 resonance become more distinct. As a complementary study, we investigate the effect of protostellar discs on the resonance capture. Our results show that the gaseous drag of a protostellar disc can trap KBOs into the 3 : 2 resonance rather easily. In addition, no objects are captured into the 2 : 1 resonance in our simulation.
ISSN:0035-8711
1365-2966
DOI:10.1111/j.1365-2966.2004.08504.x