读书：从“化学异常”到球状星团的“标准组成”
Reading the book: from "chemical anomalies" to "standard composition" of globular clusters
摘要：
现在人们普遍认为球状星团（GC）经历了复杂的形成过程，它们至少拥有两代恒星。这是一个最近的范例，并建立在光度和光谱证据。我们专注于高分辨率光谱的基础上，我们如何从单一到多个恒星星族的概念GC的结果。我们强调，GC星的特殊化学成分是建立多种群情景的基础，并简要概述了从观测中可以学到的东西。最后讨论了近年来对不同演化阶段恒星的大样本观测结果。
英文摘要：
It is now commonly accepted that globular clusters (GCs) have undergone a complex formation and that they host at least two stellar generations. This is a recent paradigm and is founded on both photometric and spectroscopic evidence. We concentrate on results based on high-resolution spectroscopy and on how we moved from single to multiple stellar populations concept for GCs. We underline that the peculiar chemical composition of GC stars is fundamental in establishing the multiple populations scenario and briefly outline what can be learned from observations. Finally, recent observational results on large samples of stars in different evolutionary phases are discussed.
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