The occurrence of high-order resonances and Kozai mechanism in the scattered disk
The occurrence of high-order resonances and Kozai mechanism in the scattered disk
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DOI：
10.1016/j.icarus.2005.11.011
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发表时间：
2006-03
期刊：
影响因子：
3.2
通讯作者：
T. Gallardo
中科院分区：
文献类型：
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作者：
T. Gallardo
通过数值方法，我们探索的高阶外部平均运动共振（MMR）与海王星的相关性，一个分散的磁盘对象（SDO）可以在其扩散到奥尔特云的经验。利用数值方法估计这些共振的强度，我们表明，高偏心率或高倾角的共振轨道应该有明显的动力学效应。我们调查的Kozai机制（KM）的非共振SDO的属性和条件，产生KM内的MMR与偏心率和倾斜度的大幅变化。我们发现MMR中的KM是具有类似冥王星或更大倾角的SDO的典型特征，并且是由扰动函数的混合（e，i）共振项中ω的振荡产生的。扩散到奥尔特云的SDO应该在MMR中经历临时捕获，优选地是1：N类型，并且当在MMR内演化并经历KM时，它可以到达共振强度下降的区域，因此有可能与共振解耦，从而产生长寿命的高近日点散射盘对象（HPSDO）。
By means of numerical methods we explore the relevance of the high-order exterior mean motion resonances (MMR) with Neptune that a scattered disk object (SDO) can experience in its diffusion to the Oort cloud. Using a numerical method for estimate the strength of these resonances we show that high-eccentricity or high-inclination resonant orbits should have evident dynamical effects. We investigate the properties of the Kozai mechanism (KM) for non-resonant SDO's and the conditions that generate the KM inside a MMR associated with substantial changes in eccentricity and inclination. We found that the KM inside a MMR is typical for SDO's with Pluto-like or greater inclinations and is generated by the oscillation of ω inside the mixed (e,i) resonant terms of the disturbing function. A SDO diffusing to the Oort cloud should experience temporary captures in MMR, preferably of the type 1:N, and when evolving inside a MMR and experiencing the KM it can reach regions where the strength of the resonance drops and consequently there is a possibility of being decoupled from the resonance generating by this way a long-lived high-perihelion scattered disk object (HPSDO).