论文标题
在三种模型的重力电势中具有不同质量的三种模型的银河系卫星星系的轨道
Orbits of 47 Dwarf Satellite Galaxies of the Milky Way in Three Models of the Gravitational Potential with Different Masses
论文作者
论文摘要
介绍了对银河系的47个矮人卫星星系的轨道分析，并使用三种模型的银河重力电势具有不同的质量。基于对文献已知的大量星系质量估计的分析，选择了银河电位的模型。矮星系的初始位置和速度（6D相空间）所需的星形数据也从文献中获取，在文献中，根据Gaia DR2目录的数据确定平均适当运动。我们在银河电位的所有三种模型中，通过整合获得13.5 Gyr的所有47个矮星系的轨道及其性能，并比较轨道参数。对于每个银河电位的模型，我们已经确定了与银河系无重力连接的矮星系。
The analysis of the orbits of 47 dwarf satellite galaxies of the Milky Way, built using three models of the Galactic gravitational potential with different masses, is presented. The models of the Galactic potential were chosen based on the analysis of a large number of the Galaxy mass estimates known from the literature. The astrometric data needed for calculation of the initial positions and velocities (6D phase space) of the dwarf galaxies are also taken from the literature, where the average proper motions were determined on the basis of the data from the Gaia DR2 Catalog. We present the orbits and their properties of all 47 dwarf galaxies obtained by integration for 13.5 Gyr backward in all three models of the Galactic potential and give a comparison of the orbital parameters. For each model of the Galactic potential we have identified dwarf galaxies that are not connected gravitationally with the Milky Way.
