HD 173977 uby photometry and HRV
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We present spectroscopic and photometric observations of the star HD 173977. It appears that the star is part of a double line binary system, with a period of 1.801d,...
本研究报道了恒星HD 173977的光谱学与光度学观测结果。研究表明，该恒星属于双谱线双星系统，轨道周期为1.801天，……
