The GALAH survey: A million-star exploration of Galactic history

赫尔墨斯星系考古学(GALAH)调查是一项对银河系100万颗恒星的轨道运动和化学成分的观测研究，计划于2013年底开始。这种类型的数据是理解恒星形成、恒星迁移和星系合并如何塑造银河系的核心。这项史无前例的新调查将使我们能够非常清楚地了解银河系的历史。该项目将利用这些数据首次明确确定小星系合并在银河系组合中的作用。由于我们自己的星系及其近邻是唯一可以在这种逐星详细程度上进行研究的星系，GALAH的调查也是我们在理解所有螺旋星系方面向前迈出的关键一步。

The GALactic Archaeology with HERMES (GALAH) survey is an observational study of the orbital motions and chemical compositions of a million stars in our Galaxy, set to begin in late 2013. This type of data is central to understanding how star formation, stellar migration and galaxy mergers have shaped the Milky Way. The unprecedented scale of this new survey will allow an extraordinarily clear view into Galactic history. This project will use this data to make the first definitive determination of the role of minor galaxy mergers in the assembly of the Milky Way. Since our own galaxy and its nearest neighbours are the only ones that can be studied at this level of star-by-star detail, the GALAH survey is also a crucial step forward in our understanding of all spiral galaxies.