太阳邻域模型中混沌的量化
Quantifying Chaos in Models of the Solar Neighbourhood
摘要：
{} {量化局部相空间中存在的混沌量。}用一种新的混沌识别（和量化）技术分析了来自四种不同太阳邻域相空间模型的轨道样本。虽然三个使用的模型承担由于银河棒和螺旋图案的扰动签名，最后一个模型是一个酒吧只有一个。我们通过相互比较在不同能级诱导的混沌强度的相应值来探索模型。{(1)我们发现，所有可行的模型，已被证明成功地再现本地相空间结构，即那些包括酒吧以及螺旋，承担强混沌，虽然模型，意味着最高程度的混乱是一个在酒吧和螺旋发生重叠的主要共振。只有酒吧模型被发现显示规律性。(2)我们提出混沌是导致局部速度分布的Hyades-Pleiades模式（较大的模式）分裂的主要原因}{}
英文摘要：
{} {To quantify the amount of chaos that exists in the local phase space.} {A sample of orbits from four different models of the Solar neighbourhood phase space are analysed by a new chaos identification (and quantification) technique. While three of the used models bear the signature of the perturbation due to both the Galactic bar and the spiral pattern, the last of the models is a bar only one. We explore the models by inter-comparing the corresponding values of chaos strength that is induced at the various energy levels .}{(1) We find that of all the viable models that have been demonstrated to successfully reproduce the local phase space structure, i.e. those that include the bar as well as the spiral, bear strong chaoticity, though the model that implies the highest degree of chaos is the one in which overlap of the major resonances of the bar and the spiral occurs. The bar only model is found to display regularity. (2) We advance chaos to be primarily responsible for the splitting of the Hyades-Pleiades mode (the larger mode) of the local velocity distribution}{}
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