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Astrophysics - Astrophysics of Galaxies
Abstract:
Our understanding of the M31 system will be transformed in the 2020s with wide field facilities for photometry (HST-like sensitivity and resolution) and spectroscopy (10 m class telescope, > 1 deg2 field, highly multiplexed, R 3000 — 6000). We focus on the power of these facilities to constrain the past, present, and future merger history of M31.