Equivalent widths of 18 subgiant of {omega} Cen
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We analyze spectra of 18 stars belonging to the faintest subgiant branch in omega Centauri (the SGB-a), obtained with GIRAFFE@VLT at a resolution of R~=17000 and a S/N ratio...
我们针对半人马座ω（Omega Centauri）中属于最暗弱亚巨星支（SGB-a）的18颗恒星的光谱展开分析，该批光谱由搭载于甚大望远镜（Very Large Telescope, VLT）的GIRAFFE摄谱仪获取，其光谱分辨率约为R≈17000，信噪比（Signal-to-Noise Ratio, S/N）……
