探测纯星盘模型中的结构生长
Detecting the growth of structures in Pure Stellar Disk Models
摘要：
我们进行了一系列的3D N体模拟，其中初始条件被选择以得到两组模型;无限制的和有限制的。在这项工作中，我们分析了螺旋和酒吧结构的增长，使用1D和2D傅立叶变换FT方法。频谱图和图表的傅立叶系数的振幅作为时间，半径和俯仰角的函数表明，一般的形态，我们的模拟星系，是由于叠加的结构，具有不同的值的俯仰角和数量的武器。此外，我们在棒模型的几何分类的轨道从酒吧的参考系显示，禁止潜在的和拉格朗日点$L_4$和$L_5$捕获约三分之一的总磁盘质量。
英文摘要：
We performed a series of 3D N-body simulations where the initial conditions were chosen to get two sets of models; unbarred and barred ones. In this work, we analyze the growth of spirals and bar structures using 1D, and 2D Fourier Transforms FT methods. Spectrograms and diagrams of the amplitude of the Fourier coefficients as a function of time, radius and pitch angle show that the general morphology, of our modeled galaxies, is due to the superposition of structures which have different values of pitch angle and number of arms. Also, we made in barred models a geometric classification of orbits from the bar reference frame showing that the barred potential and the Lagrangian points $L_4$ and $L_5$ catch approximately one-third of the total disk mass.
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