Astronomy & Astrophysics manuscript no. version08 c ESO 2019 April 30, 2019 Magnetic fields in M dwarfs from the CARMENES survey D. Shulyak1; 2, A. Reiners1, E. Nagel3, L. Tal-Or1; 4, J. A. Caballero9, M. Zechmeister2, V.J. S. Béjar11; 15, M. Cortés-Contreras9, E. L. Martin9, A. Kaminski7, I. Ribas5; 6, A. Quirrenbach7, P.J. Amado8, G. Anglada-Escudé8; 10, F. F. Bauer8, S. Dreizler2, E. W. Guenther12, T. Henning13, S. V. Jeffers2, M. Kürster12, M. Lafarga5; 6, J. C. Morales5; 6, and S. Pedraz14 1 Max-Planck-Institute für Sonnensystemforschung, Justus-von-Liebig-Weg 3, D-37075 Göttingen, Germany e-mail:
[email protected] 2 Institut für Astrophysik, Göttingen Universität, Friedrich-Hund-Platz 1, D-37075 Göttingen, Germany 3 Hamburger Sternwarte, Gojenbergsweg 112, D-21029 Hamburg, Germany 4 Department of Geophysics, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel 5 Institut de Ciéncies de l’Espai (ICE, CSIC), Campus UAB, c/ de Can Magrans s/n, E-08193, Bellaterra, Barcelona, Spain 6 Institut d’Estudis Espacials de Catalunya (IEEC), E-08034, Barcelona, Spain 7 Landessternwarte, Zentrum für Astronomie der Universität Heidelberg, Königstuhl 12, D-69117, Heidelberg, Germany 8 Instituto de Astrofisica de Andalucia (IAA-CSIC), Glorieta de la Astronomia s/n, E-18008, Granada, Spain 9 Centro de Astrobiologia (CSIC-INTA), ESAC, Camino Bajo del Castillo s/n, E-28692, Villanueva de la Cañada, Madrid, Spain 10 Queen Mary University of London, Mile End Road, London E1 4NS, UK 11 Universidad de La Laguna, Departamento de Astrofisica, C/ Via Láctea s/n, La Laguna, Tenerife, E-38206, Spain 12 Thüringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany 13 Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117, Heidelberg, Germany 14 Centro Astronómico Hispano-Alemán (CSIC-MPG), Observatorio Astronómico de Calar Alto, Sierra de los Filabres, E-04550, Gérgal, Almeria, Spain 15 Instituto de Astrofísica de Canarias, Vía Láctea, s/n E38205, La Laguna, Tenerife, Spain Received ; accepted ABSTRACT Context.