Unveiling the hidden stars of the Universe

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This project aims to unveil the diffuse collection of stars known to sit at the centres of systems of galaxies. Any star unbound in past galaxy interactions remains in this collection, making it a fundamental fossil record of the evolution of galaxies. Until recently, accessing data about this collection was difficult, however the new Hyper Suprime-Cam Subaru Strategic Program is now taking observations of a wide area of sky and, being co-located with the Australian-led Galaxy and Mass Assembly spectroscopic survey, allows access to a significant new data set. Using this data set, the project expects to provide new insights into galaxy evolutions as well as deliver software modules and catalogues of benefit to the astronomy community.