The mean longitudinal magnetic field and its uses in radial-velocity surveys

F Rescigno^*, A Mortier, X Dumusque, B S Lakeland, R Haywood, N Piskunov, B A Nicholson, M López-Morales, S Dalal, M Cretignier, B Klein, A Collier Cameron, A Ghedina, M Gonzalez, R Cosentino, A Sozzetti, S H Saar

^*Corresponding author for this work