论文标题
对银河系动力学的物理解释，来自精密星元素
A Physical Interpretation of Milky Way Galaxy Dynamics from Precision Astrometrics
论文作者
论文摘要
使用最新的高精度恒星光环和矮星系运动学估算银河系的动力学和病毒质量。新数据表明银河系是一个高度紧凑的，经典的热对象。运动学表现出明显的速度空间子结构，独特的动态分区以及强大的开普勒签名，这些签名与流行的无特征和大规模扩展的暗物质光环的概念相反。通过分布和运动学来量化银河系的有效局部逃逸速度谱，以揭示负责质量差异加速器（MDAR）和径向加速度（RAR）关系的物理学。
The dynamical and virial mass of the Milky Way galaxy is estimated using latest high precision stellar halo and dwarf galaxy satellite kinematics. The new data suggest the Galaxy is a highly compact, classically thermalized object. Kinematics exhibit significant velocity-spatial substructure, distinctive dynamic partitions, and strong Keplerian signatures that run counter to popular notions of featureless and massively extended dark matter halos. The effective local escape velocity profile of the Galaxy is quantified in terms of distribution and kinematics to reveal the physics responsible for the Mass Discrepancy-Acceleration (MDAR) and Radial Acceleration (RAR) relations.
