Radial velocity curves of Gaia-4 and Gaia-5

Gaia astrometry of nearby stars is precise enough to detect the tiny displacements induced by substellar companions, but radial velocity (RV) data are needed for definitive...盖亚（Gaia）卫星对邻近恒星的天体测量精度足以探测由亚恒星伴星引发的微小位移，但要获得确定性的……，仍需视向速度（Radial Velocity, RV）数据。