Density waves and star formation in grand-design spirals Bernabé Cedrés, Jordi Cepa, Ángel Bongiovanni, Héctor Castañeda, Miguel Sánchez-Portal and Akihiko Tomita A&A, 560 (2013) A59 Published online: 05 December 2013 DOI: 10.1051/0004-6361/201321588