Disentangling the Complexity of Old Stellar Populations

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Galaxy formation is an outstanding problem in modern astronomy. Star clusters are the basic building blocks in the Universe. The oldest stellar aggregates are the globular clusters whose stars show patterns in composition that are not found elsewhere. This project aims to bring new understanding to globular clusters by studying the composition of their constituent stars in many different environments. Patterns in this composition reveal the history of star formation and the formation of the globular clusters themselves. These are in turn involved in the formation of galaxies. The project aims to use these stars to probe the formation of globular clusters and the stellar components of the Galaxy, and hence link these old stars to larger cosmological questions.