银河系中移动星系群的真实性
Reality of Moving Groups in the Galaxy
摘要：
银河系盘内是否存在古老的分散恒星群仍然存在争议。它们是古代恒星形成聚集体的碎片，还是动力学起源的短命人工制品？通过对高质量光谱数据进行详细的元素丰度测量，我们发现至少有一个这样古老的分散恒星群是恒星形成早期阶段的真正遗迹。其他类似遗迹结构的发现将为探索银河系盘的演化历史提供必要的信息。
英文摘要：
The existence of old dispersed stellar groups within the Milky Way disk is still controversial. Are they the debris of ancient star-forming aggregates, or short-lived artifacts of dynamical origin? With detailed elemental abundance measurements from high quality spectroscopic data, we show that at least one such old dispersed stellar group is a true relic of an earlier phase of star formation. The identification of other such relic structures will provide essential information for probing the evolutionary history of the Milky Way disk.
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