Seismic modelling of the β Cephei star HD 180642 (V1449 Aquilae) C. Aerts, M. Briquet, P. Degroote, A. Thoul and T. Van Hoolst A&A, 534 (2011) A98 Published online: 12 October 2011 DOI: 10.1051/0004-6361/201117629