Strong H i Lyman-α variations from an 11 Gyr-old host star: a planetary origin? V. Bourrier, D. Ehrenreich, R. Allart, A. Wyttenbach, T. Semaan, N. Astudillo-Defru, A. Gracia-Berná, C. Lovis, F. Pepe, N. Thomas and S. Udry A&A, 602 (2017) A106 Published online: 22 June 2017 DOI: 10.1051/0004-6361/201730542