We performed test-particle simulations of a spiral late-type-like galaxy to study the radial migration in a steady potential. Our model includes a bulge, a disc, a dark matter halo, and spiral arms represented by a cosine potential. We varied the structural and dynamical parameters of the spiral arms to study the influence of each configuration on the stellar orbits, such as the pitch angle, the radial scale length, and the pattern speed. We analysed the changes in the z component of the angular momentum (Lz), radius (R), and eccentricity of individual stars at different times. We found that the stellar orbits are affected by radial migration in all cases. Also, we found that the most relevant parameter to the radial migration phenomenon, in co-rotation, is the radial scale length of the spiral arms.

中文翻译：

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旋臂参数对晚型星系径向迁移的影响

我们对螺旋状晚型星系进行了测试粒子模拟，以研究稳定势中的径向迁移。我们的模型包括一个凸起、一个圆盘、一个暗物质晕和由余弦势表示的旋臂。我们改变了旋臂的结构和动力学参数，以研究每种配置对恒星轨道的影响，例如俯仰角、径向尺度长度和模式速度。我们分析了各个恒星在不同时间的角动量 (Lz)、半径 (R) 和偏心率的 z 分量的变化。我们发现恒星轨道在所有情况下都受到径向迁移的影响。此外，我们发现与径向迁移现象最相关的参数，即同向旋转，是旋臂的径向尺度长度。