Theoretical models of planetary system formation: mass vs. semi-major axis Y. Alibert, F. Carron, A. Fortier, S. Pfyffer, W. Benz, C. Mordasini and D. Swoboda A&A, 558 (2013) A109 Published online: 14 October 2013 DOI: 10.1051/0004-6361/201321690