GJ 357 b - A super-Earth orbiting an extremely inactive host star D. Modirrousta-Galian, B. Stelzer, E. Magaudda, J. Maldonado, M. Güdel, J. Sanz-Forcada, B. Edwards and G. Micela A&A, 641 (2020) A113 Published online: 16 September 2020 DOI: 10.1051/0004-6361/202038280