Radial velocities of 4 Cepheids
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Continued radial velocity observations over several years, have allowed to discover four spectroscopic binary systems among our sample of twenty five galactic Cepheids. Each...
经过持续数年的径向速度（radial velocity）观测，我们从涵盖25颗银河造父变星（Cepheids）的样本中甄别出4个分光双星（spectroscopic binary）系统。每个……
