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arXiv 2302.01221astro-ph.EP
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海王星外区域的动力学普查 I.:与海王星的平运动共振

A dynamical survey of the trans-Neptunian region I.: Mean-motion resonances with Neptune

E. Forgács-Dajka, E. Kővári, T. Kovács, Cs. Kiss, Zs. Sándor

AI总结:

本文对4121个海王星外天体进行大规模长期数值积分,应用自主开发的FAIR方法半自动识别高阶平运动共振,构建动力学地图揭示了共振的稳定作用。

摘要:

本文对海王星外区域进行了大规模动力学普查,特别关注平运动共振(MMRs)。我们研究了4121个海王星外天体(TNOs),样本远大于以往研究。我们执行了直接的长期数值积分,使我们能够检查单个TNOs的整体动力学并识别所有MMRs。为此目的,我们应用了自主开发的FAIR方法,该方法允许半自动识别甚至非常高阶的MMRs。除了搜索以往研究集中的更频繁的偏心率型共振外,我们还设置方法以允许识别倾角型MMRs。此外,我们区分了在整个积分时间跨度($10^8$年)内锁定在给定MMR中的TNOs和仅被共振暂时捕获的TNOs。为了更详细地分析海王星外空间的动力学,我们还使用测试粒子构建了动力学地图。观察34-80 AU区域的精细结构突出了MMRs的稳定作用,规则区域与真实TNOs的位置重合。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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