Detection of the hydrogen Balmer lines in the ultra-hot Jupiter WASP-33b F. Yan, A. Wyttenbach, N. Casasayas-Barris, A. Reiners, E. Pallé, Th. Henning, P. Mollière, S. Czesla, L. Nortmann, K. Molaverdikhani et al. (17 more) A&A, 645 (2021) A22 Published online: 22 December 2020 DOI: 10.1051/0004-6361/202039302