HST/Gemini proper motions for Pyxis

We present a proper motion measurement for the halo globular cluster Pyxis, using Hubble Space Telescope/ACS data as the first epoch and GeMS/GSAOI Adaptive Optics data as the...本研究报道了针对晕球状星团Pyxis（罗盘座）的自行（proper motion）测量结果，以哈勃空间望远镜/ACS的观测数据作为第一历元，并以GeMS/GSAOI自适应光学（Adaptive Optics）数据作为……