A new population of extended, luminous star clusters in the halo of M31

Huxor, A.P., Tanvir, N., Irwin, J., Ibata, R.A., Collett, J., Ferguson, A.M.N., Bridges, T. and Lewis, G.F. (2005) A new population of extended, luminous star clusters in the halo of M31. Monthly Notices of the Royal Astronomical Society (MNRAS), 360 (3). pp. 1007-1012. ISSN 0035-8711