Mackey, AlasdairHuxor, AMartin, N FFerguson, A. M. N.Dotter, AaronMcConnachie, Alan WIbata, Rodrigo AIrwin, M. J.Lewis, Geraint FrancisSakari, C MTanvir, Nial RVenn, Kim2015-12-132041-8205http://hdl.handle.net/1885/73032We present Hubble Space Telescope imaging of a newly discovered faint stellar system, PAndAS-48, in the outskirts of the M31 halo. Our photometry reveals this object to be comprised of an ancient and very metal-poor stellar population with age ≳ 10 GyrAuthor/s retain copyrightKeywords: galaxies: dwarf; galaxies: individual (M31); globular clusters: general; Local Group201310.1088/2041-8205/770/2/L172016-02-24