LOS velocities & [Fe/H] of Pal 5 tidal stream

We present Subaru/Faint Object Camera and Spectrograph and Keck/Deep Imaging Multi-Object Spectrometer medium-resolution spectroscopy of a tidally disrupting Milky Way (MW)...本文提供了针对一颗正在经历潮汐瓦解的银河系（Milky Way，缩写MW）的中分辨率光谱数据，该数据由昴星团望远镜（Subaru）搭载的暗天体相机与摄谱仪（Faint Object Camera and Spectrograph）以及凯克望远镜（Keck）搭载的深成像多目标摄谱仪（Deep Imaging Multi-Object Spectrometer）获取。