Nearby FGK stars chromospheric activity

Chromospheric activity produces both photometric and spectroscopic variations that can be mistaken as planets. Large spots crossing the stellar disc can produce planet-like...色球活动（chromospheric activity）可引发测光与光谱两类变化，此类变化易被误判为行星信号。掠过恒星盘面的大型星斑会产生类行星的……