Radial velocity measurements of 42 Draconis
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Published radial velocity measurements of the K giant star 42 Dra taken over a three year time span reveal variations consistent with a 3.9M_Jup_ mass companion in a 479-d...
针对K型巨星42 Dra开展的为期三年的公开视向速度(radial velocity)测量结果显示,其观测到的速度变化与一颗质量为3.9倍木星质量(M_Jup)、轨道周期为479天的伴天体的特征相符,该伴天体的相关参数为……



