标题： 6822本地群矮星系的球状星团光谱学研究 显示英文标题

标题： Spectroscopy of a Globular Cluster in the Local Group dIrr NGC 6822

摘要： 我们展示了对本星系矮不规则星系NGC 6822中的球状星团H VIII的低分辨率凯克光谱观测。我们发现该星团的金属丰度为[Fe/H]=-1.58±0.28，年龄为3-4 Gyr，比之前的估计稍老一些，但一致。H VIII似乎比本星系群大多数中间年龄的球状星团更贫金属，并且与异常的麦哲伦云星团Lindsay 113和NGC 339最为相似。 显示英文摘要

摘要： We present low-resolution Keck spectroscopy for the globular cluster H VIII in the Local Group dIrr galaxy NGC 6822. We find the metallicity of the cluster to be [Fe/H]= -1.58 +/- 0.28 and the age of the cluster to be 3-4 Gyr, slightly older than but consistent with previous age estimates. H VIII seems to be more metal-poor than most intermediate-age globular clusters in the Local Group, and appears most similar to the anomalous Small Magellanic Cloud clusters Lindsay 113 and NGC 339.