Chromospheric Ca II emission in nearby stars
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We present chromospheric CaII H and K activity measurements, rotation periods, and ages for ~1200 F, G, K, and M type main-sequence stars from ~18000 archival spectra taken at...
本文报道了约1200颗F、G、K、M型主序星的色球层钙II（CaII）H与K谱线活动测量值、自转周期及年龄参数，数据来源于约18000份归档光谱，这些光谱采集于……
