内极环和外极环的观测性质
Inner Polar Rings and Disks: Observed Properties
摘要：
根据文献资料编制了一份星系内部区域显示极盘（或强烈倾向于主银道面）和环的列表。该列表包含47个星系的所有形态类型，从E到Irr。我们考虑的统计参数的极性结构已知的观测。其中大多数的半径不超过1.5千秒差距。极结构在棒星系和无棒星系中同样常见。同时，如果一个星系有一个棒（或三轴凸起），这会导致极盘的稳定性-它的旋转轴通常与棒的长轴重合。超过三分之二的星系揭示了最近相互作用或合并的一个或另一个迹象。这一事实表明外部环境与内部极性结构的存在之间存在直接关系。
英文摘要：
A list of galaxies with inner regions revealing polar (or strongly inclined to the main galactic plane) disks and rings is compiled from the literature data. The list contains 47 galaxies of all morphological types, from E to Irr. We consider the statistics of the parameters of polar structures known from observations. The radii of the majority of them do not exceed 1.5 kpc. The polar structures are equally common in barred and unbarred galaxies. At the same time, if a galaxy has a bar (or a triaxial bulge), this leads to the polar disk stabilization - its axis of rotation usually coincides with the major axis of the bar. More than two thirds of all considered galaxies reveal one or another sign of recent interaction or merging. This fact indicates a direct relation between the external environment and the presence of an inner polar structure.
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。
