Radial-velocity fitting challenge حسب Dumusque, X, Borsa, F, Damasso, M, Díaz, R, Gregory, P, Hara, N, Hatzes, A, Rajpaul, V, Tuomi, M, Aigrain, S, Anglada-Escudé, G, Bonomo, A, Boué, G, Dauvergne, F, Frustagli, G, Giacobbe, P, Haywood, R, Jones, H, Laskar, J, Pinamonti, M, Poretti, E, Rainer, M, Ségransan, D, Sozzetti, A, Udry, S