The slowly pulsating B-star 18 Pegasi: A testbed for upper main sequence stellar evolution A. Irrgang, A. Desphande, S. Moehler, M. Mugrauer and D. Janousch A&A, 591 (2016) L6 Published online: 21 June 2016 DOI: 10.1051/0004-6361/201628844