Metallic line doubling phenomenon in RR Lyrae
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For the first time, the observation of the line doubling phenomenon over two metallic absorption lines of a RR Lyrae star (RR Lyr) is reported. A resolving power of 42,000 and a...
本研究首次报道了针对一颗天琴座RR型变星（RR Lyr）的两条金属吸收线的谱线双线现象的观测。该观测的光谱分辨本领为42000，且……
