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

银河考古与赫尔姆斯（GALAH）调查是对我们银河系中100万颗恒星的轨道运动和化学成分的观测研究，将于2013年底开始。这类数据对于理解恒星形成、恒星迁移和星系合并如何塑造银河系至关重要。这项前所未有的新调查将使我们对银河系的历史有一个非常清晰的认识。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形成过程中的作用。由于我们自己的星系和它最近的邻居是唯一可以在这个水平上研究逐星细节的星系，因此GALAH调查也是我们了解所有螺旋星系的关键一步。

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.