论文标题
本地组矮星系中的恒星动力和暗物质
Stellar dynamics and dark matter in Local Group dwarf galaxies
论文作者
论文摘要
当在牛顿重力和动力学的标准框架内解释时，矮星系中的恒星和气体的运动学表明，这些系统中的大多数完全由它们的暗物质光环占主导地位。因此，这些矮星系是研究暗光晕和暗物质本质的最佳天体物理实验室之一。我们从恒星动力学的角度回顾了当地群体矮星系的特性。在描述了其恒星组件的观察到的运动学并提供了动态建模技术的概述之后，我们研究了这些星系的暗物质含量和分布，这是从观察到的数据和动力学模型的组合中推断出来的。我们还简要介绍了使用附近矮星系作为通过an灭或衰减排放来间接检测暗物质的目标。
When interpreted within the standard framework of Newtonian gravity and dynamics, the kinematics of stars and gas in dwarf galaxies reveals that most of these systems are completely dominated by their dark matter halos. These dwarf galaxies are thus among the best astrophysical laboratories to study the structure of dark halos and the nature of dark matter. We review the properties of the dwarf galaxies of the Local Group from the point of view of stellar dynamics. After describing the observed kinematics of their stellar components and providing an overview of the dynamical modelling techniques, we look into the dark matter content and distribution of these galaxies, as inferred from the combination of observed data and dynamical models. We also briefly touch upon the prospects of using nearby dwarf galaxies as targets for indirect detection of dark matter via annihilation or decay emission.
