The Structure of the Distant Kuiper Belt in a Nice Model Scenario
- Department of Physics and Astronomy, University of Victoria, Victoria, BC (Canada)
- National Research Council of Canada, Victoria, BC (Canada)
- Earth Life Science Institute, Tokyo Institute of Technology, Meguro, Tokyo 152-8550 (Japan)
- Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 10617, Taiwan (China)
This work explores the orbital distribution of minor bodies in the outer Solar System emplaced as a result of a Nice model migration from the simulations of Brasser and Morbidelli. This planetary migration scatters a planetesimal disk from between 29 and 34 au and emplaces a population of objects into the Kuiper Belt region. From the 2:1 Neptune resonance and outward, the test particles analyzed populate the outer resonances with orbital distributions consistent with trans-Neptunian object (TNO) detections in semimajor axis, inclination, and eccentricity, while capture into the closest resonances is too efficient. The relative populations of the simulated scattering objects and resonant objects in the 3:1 and 4:1 resonances are also consistent with observed populations based on debiased TNO surveys, but the 5:1 resonance is severely underpopulated compared to population estimates from survey results. Scattering emplacement results in the expected orbital distribution for the majority of the TNO populations; however, the origin of the large observed population in the 5:1 resonance remains unexplained.
- OSTI ID:
- 22663756
- Journal Information:
- Astronomical Journal (Online), Vol. 153, Issue 3; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-3881
- Country of Publication:
- United States
- Language:
- English
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