The old and heavy bulge of M 31 - I. Kinematics and stellar populations R. P. Saglia, M. Fabricius, R. Bender, M. Montalto, C.-H. Lee, A. Riffeser, S. Seitz, L. Morganti, O. Gerhard and U. Hopp A&A, 509 (2010) A61 Published online: 19 January 2010 DOI: 10.1051/0004-6361/200912805