发现第一颗超级富锂Beat造父变星：V371
Discovery of the first Super-Lithium rich Beat Cepheid: V371 Per
摘要：
首次获得的双模造父变星V371 Per的四个高分辨率光谱显示了异常强的Li I 6707.76 A线的存在。我们对轻元素丰度的分析表明，这颗恒星没有经历进化的挖掘阶段。距离银道面较远和较低的金属丰度表明，V371 Per可能属于银河系的厚盘（或晕），这与它的低金属丰度[Fe/H]=-0.42以及α和s元素相对于铁的增强相一致。在其中一个光谱中观察到谱线分裂，这可能是由于非径向脉动。
英文摘要：
Four high-resolution spectra of the double-mode Cepheid V371 Per, obtained for the first time, showed the presence of the abnormally strong Li I 6707.76 A line. Our analysis of the light element abundances indicates that the star did not go through the evolutionary dredge-up stage. Large distance from the galactic plane and the low metallicity suggest that V371 Per may belong to the thick disc (or to the halo) of the Galaxy, which is consistent with its low metallicity [Fe/H]=-0.42 and the enhancement of the alpha- and s-elements relative to iron. Line splitting is observed in one of the spectra, which can be due to the non-radial pulsations.
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