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ORBITS IN THE BAR OF NGC 4314

机译:NGC 4314栏中的轨道

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We find the main families of simple periodic orbits in and around the bar of NGC 4314 and examine their stability. In many ways, our results agree with those found for model barred galaxies, yet our realistic potential allows us to go further in a comparison with the galaxy morphology. In particular, we underline the importance of the families of periodic orbits that are asymmetric with respect to the bar minor axis. The x_1 family provides the building blocks for the bar. In the inner parts we find orbits that are roughly perpendicular to the bar, although their shape and orientation vary along the corresponding families. As in previous studies, we find a symmetric unstable 3:1 family, but we also find an asymmetric and stable 3:1 family. We also find asymmetric diamond-like orbits near corotation. We pay special attention to the orbital behavior at the ultraharmonic resonance region, and we investigate all possibilities offered by our study in explaining the boxy structure at the end of the bar.
机译:我们在NGC 4314的条中及其周围找到了简单周期轨道的主要族,并研究了它们的稳定性。在许多方面,我们的结果与模型禁止星系的发现一致,但是我们的现实潜力使我们可以与银河形态进行比较。特别是,我们强调了相对于短轴来说不对称的周期性轨道族的重要性。 x_1系列为酒吧提供了构建块。在内部,我们发现轨道大致垂直于条形,尽管它们的形状和方向沿相应的族不同。与以前的研究一样,我们找到了一个对称的不稳定的3:1家庭,但我们也找到了一个不对称的稳定的3:1家庭。我们还发现在同向旋转附近存在不对称的类钻石轨道。我们特别注意超谐共振区域的轨道行为,我们研究了这项研究提供的所有可能性,以解释横条末端的四方形结构。

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