Radial Velocities of Stars in M4

The internal stellar velocity distribution of the globular cluster M4 is evaluated from nearly 200 new radial velocity measurements good to 1 km/s and a rederivation of existing...基于近200组精度可达1 km/s的新型视向速度测量数据，以及对已有相关内容的重新推导，本研究完成了球状星团M4内部恒星速度分布的测定。