A dynamical survey of the trans-Neptunian region I.: Mean-motion resonances with Neptune
| Autor: | Forgács-Dajka, E., Kővári, E., Kovács, T., Kiss, Cs., Sándor, Zs. |
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| Rok vydání: | 2023 |
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| Druh dokumentu: | Working Paper |
| DOI: | 10.3847/1538-4365/acc4c8 |
| Popis: | In this paper, we present a large-scale dynamical survey of the trans-Neptunian region, with particular attention to mean-motion resonances (MMRs). We study a set of 4121 trans-Neptunian objects (TNOs), a sample far larger than in previous works. We perform direct long-term numerical integrations that enable us to examine the overall dynamics of the individual TNOs as well as to identify all MMRs. For the latter purpose, we apply the own-developed FAIR method that allows the semi-automatic identification of even very high-order MMRs. Apart from searching for the more frequent eccentricity-type resonances that previous studies concentrated on, we set our method to allow the identification of inclination-type MMRs, too. Furthermore, we distinguish between TNOs that are locked in the given MMR throughout the whole integration time span ($10^8$\,years) and those that are only temporarily captured in resonances. For a more detailed dynamical analysis of the trans-Neptunian space, we also construct dynamical maps using test particles. Observing the fine structure of the $ 34-80 $~AU region underlines the stabilizing role of the MMRs, with the regular regions coinciding with the position of the real TNOs. Comment: 16 pages, 17 figures, accepted by The Astrophysical Journal Supplement Series |
| Databáze: | arXiv |
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