Signatures of a Distant Planet on the Inclination Distribution of the Detached Kuiper Belt
A distant, massive planet in the outer solar system has recently been proposed to explain some observed features of extreme trans-Neptunian objects (TNOs). Here we use N-body simulations of the formation of the Kuiper belt and Oort cloud as well as a survey simulator to compare models of the solar s...
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| description | A distant, massive planet in the outer solar system has recently been proposed to explain some observed features of extreme trans-Neptunian objects (TNOs). Here we use N-body simulations of the formation of the Kuiper belt and Oort cloud as well as a survey simulator to compare models of the solar system with and without a 9th planet to one another as well as to observations. The main mechanism for TNOs to be deposited into the distant (\(a\) > au), detached (\(q\) > au) region of the Kuiper Belt in the 8-planet model is Kozai-Lidov oscillation of objects in mean motion resonances (MMR) with Neptune. This effect does not deposit low-inclination (\(i \lesssim\) 20{\deg}) objects into this region. However, we find that the 9th planet generates a group of distant, detached TNOs at low inclinations that are not present in the 8-planet model. This disparity between the 8-planet and the 9-planet models could provide a strong constraint on a possible planet 9 with further detections of TNOs in the distant, detached region of the Kuiper Belt. |
| doi_str_mv | 10.48550/arxiv.2109.13307 |
| format | Article |
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Here we use N-body simulations of the formation of the Kuiper belt and Oort cloud as well as a survey simulator to compare models of the solar system with and without a 9th planet to one another as well as to observations. The main mechanism for TNOs to be deposited into the distant (\(a\) > au), detached (\(q\) > au) region of the Kuiper Belt in the 8-planet model is Kozai-Lidov oscillation of objects in mean motion resonances (MMR) with Neptune. This effect does not deposit low-inclination (\(i \lesssim\) 20{\deg}) objects into this region. However, we find that the 9th planet generates a group of distant, detached TNOs at low inclinations that are not present in the 8-planet model. 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| subjects | Constraint modelling Detaching Inclination Kuiper belt Neptune Oort cloud Orbital resonances (celestial mechanics) Outer solar system Physics - Earth and Planetary Astrophysics Pluto Solar system Trans-Neptunian objects |
| title | Signatures of a Distant Planet on the Inclination Distribution of the Detached Kuiper Belt |
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