The abundance patterns of r-process-enhanced stars contain key information required to constrain the astrophysical site(s) of r-process nucleosynthesis, and to deepen our understanding of the chemical evolution of our Galaxy. To expand the sample of known r-process-enhanced stars, we have developed a method to search for candidates in the LAMOST medium-resolution (R ∼ 7500) spectroscopic survey by matching the observed spectra to synthetic templates around the Eu ii line at 6645.1 . We obtain a sample of 13 metal-poor (−2.35 < [Fe/H] < −0.91) candidates from 12 209 unique stars with 32 774 mediumresolution spectra. These candidates will be further studied by high-resolution follow-up observations in the near future. We describe some extensions of this effort to include larger samples of stars, in particular at lower metallicity, using the strength of the Ba ii line at 6496.9 .

r过程增强恒星的丰度模式包含限制r过程核合成的天体物理位置以及加深我们对银河系化学演化的理解所需的关键信息。为了扩大已知r过程增强恒星的样本，我们开发了一种方法，通过将观察到的光谱与 Eu ii周围的合成模板匹配，在 LMOST 中等分辨率（R∼7500）光谱调查中搜索候选者线在 6645.1 。我们从具有 32 774 个中等分辨率光谱的 12 209 颗独特恒星中获得了 13 个贫金属（-2.35 < [Fe/H] < -0.91）候选者的样本。这些候选者将在不久的将来通过高分辨率的后续观察进一步研究。我们使用 Ba ii线在 6496.9 处的强度描述了这项工作的一些扩展，以包括更大的恒星样本，特别是在金属丰度较低的情况下。