The solar neighbourhood in angle coordinates: the Hyades moving group
The solar neighbourhood in angle coordinates: the Hyades moving group
复制标题
角坐标中的太阳邻域：毕星团移动群
DOI：
10.1111/j.1365-2966.2011.19520.x
复制
发表时间：
2011
影响因子：
4.8
通讯作者：
P. McMillan
中科院分区：
文献类型：
--
作者：
P. McMillan
我调查了这样一种说法，即太阳附近的毕星团移动群是最近林德布拉德内部共振的结果。我使用银河系的动态“环面”模型来了解太阳邻域恒星在相位混合模型和包含谐振组件的模型的角度坐标中的预期分布。我表明，在角坐标中寻找共振特征的尝试受到选择效应的强烈影响，包括与给定点恒星的作用和角度之间的关系相关的相当微妙的效应。这些效应意味着无法使用简单的测试来确定在太阳附近看到的子结构是否与任何给定的共振有关。
I investigate the suggestion that the Hyades moving group in the solar neighbourhood is the result of a recent inner Lindblad resonance. I use dynamical ‘torus’ models of the Galaxy to understand the expected distribution of solar neighbourhood stars in angle coordinates for phase-mixed models and models which include a resonant component. I show that attempts to find the signatures of resonances in angle coordinates are strongly influenced by selection effects, including rather subtle effects associated with the relationship between action and angle for stars at a given point. These effects mean that one cannot use simple tests to determine whether substructures seen in the solar neighbourhood are associated with any given resonance.