A giant exoplanet orbiting a very low-mass star challenges planet formation models
Creators: name: Morales, J. C.
name: Mustill, A. J.
name: Ribas, I.
name: Davies, M. B.
name: Reiners, A.
name: Bauer, F. F.
name: Kossakowski, D.
name: Herrero, E.
name: Rodríguez, E.
name: López-González, M. J.
name: Rodríguez-López, C.
name: Béjar, V. J. S.
name: González-Cuesta, L.
name: Luque, R.
name: Pallé, E.
name: Perger, M.
name: Baroch, D.
name: Johansen, A.
name: Klahr, H.
name: Mordasini, C.
name: Anglada-Escudé, G.
name: Caballero, J. A.
name: Cortés-Contreras, M.
name: Dreizler, S.
name: Lafarga, M.
name: Nagel, E.
name: Passegger, V. M.
name: Reffert, S.
name: Rosich, A.
name: Schweitzer, A.
name: Tal-Or, L.
name: Trifonov, T.
name: Zechmeister, M.
name: Quirrenbach, A.
name: Amado, P. J.
name: Guenther, E. W.
name: Hagen, H. -J.
name: Henning, T.
name: Jeffers, S. V.
name: Kaminski, A.
name: Kürster, M.
name: Montes, D.
name: Seifert, W.
name: Abellán, F. J.
name: Abril, M.
name: Aceituno, J.
name: Aceituno, F. J.
name: Alonso-Floriano, F. J.
name: Eiff, M. Ammler-von
name: Antona, R.
name: Arroyo-Torres, B.
name: Azzaro, M.
name: Barrado, D.
name: Becerril-Jarque, S.
name: Benítez, D.
name: Berdiñas, Z. M.
name: Bergond, G.
name: Brinkmöller, M.
name: del Burgo, C.
name: Burn, R.
name: Calvo-Ortega, R.
name: Cano, J.
name: Cárdenas, M. C.
name: Guillén, C. Cardona
name: Carro, J.
name: Casal, E.
name: Casanova, V.
name: Casasayas-Barris, N.
name: Chaturvedi, P.
name: Cifuentes, C.
name: Claret, A.
name: Colomé, J.
name: Czesla, S.
name: Díez-Alonso, E.
name: Dorda, R.
name: Emsenhuber, A.
name: Fernández, M.
name: Fernández-Martín, A.
name: Ferro, I. M.
name: Fuhrmeister, B.
name: Galadí-Enríquez, D.
name: Cava, I. Gallardo
name: Vargas, M. L. García
name: Garcia-Piquer, A.
name: Gesa, L.
name: González-Álvarez, E.
name: Hernández, J. I. González
name: González-Peinado, R.
name: Guàrdia, J.
name: Guijarro, A.
name: de Guindos, E.
name: Hatzes, A. P.
name: Hauschildt, P. H.
name: Hedrosa, R. P.
name: Hermelo, I.
name: Arabi, R. Hernández
name: Otero, F. Hernández
name: Hintz, D.
name: Holgado, G.
name: Huber, A.
name: Huke, P.
name: Johnson, E. N.
name: de Juan, E.
name: Kehr, M.
name: Kemmer, J.
name: Kim, M.
name: Klüter, J.
name: Klutsch, A.
name: Labarga, F.
name: Labiche, N.
name: Lalitha, S.
name: Lampón, M.
name: Lara, L. M.
name: Launhardt, R.
name: Lázaro, F. J.
name: Lizon, J. -L.
name: Llamas, M.
name: Lodieu, N.
name: del Fresno, M. López
name: Salas, J. F. López
name: López-Santiago, J.
name: Madinabeitia, H. Magán
name: Mall, U.
name: Mancini, L.
name: Mandel, H.
name: Marfil, E.
name: Molina, J. A. Marín
name: Martín, E. L.
name: Martín-Fernández, P.
name: Martín-Ruiz, S.
name: Martínez-Rodríguez, H.
name: Marvin, C. J.
name: Mirabet, E.
name: Moya, A.
name: Naranjo, V.
name: Nelson, R. P.
name: Nortmann, L.
name: Nowak, G.
name: Ofir, A.
name: Pascual, J.
name: Pavlov, A.
name: Pedraz, S.
name: Medialdea, D. Pérez
name: Pérez-Calpena, A.
name: Perryman, M. A. C.
name: Rabaza, O.
name: Ballesta, A. Ramón
name: Rebolo, R.
name: Redondo, P.
name: Rix, H. -W.
name: Rodler, F.
name: Trinidad, A. Rodríguez
name: Sabotta, S.
name: Sadegi, S.
name: Salz, M.
name: Sánchez-Blanco, E.
name: Carrasco, M. A. Sánchez
name: Sánchez-López, A.
name: Sanz-Forcada, J.
name: Sarkis, P.
name: Sarmiento, L. F.
name: Schäfer, S.
name: Schlecker, M.
name: Schmitt, J. H. M. M.
name: Schöfer, P.
name: Solano, E.
name: Sota, A.
name: Stahl, O.
name: Stock, S.
name: Stuber, T.
name: Stürmer, J.
name: Suárez, J. C.
name: Tabernero, H. M.
name: Tulloch, S. M.
name: Veredas, G.
name: Vico-Linares, J. I.
name: Vilardell, F.
name: Wagner, K.
name: Winkler, J.
name: Wolthoff, V.
name: Yan, F.
name: Osorio, M. R. Zapatero
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Statistical analyses from exoplanet surveys around low-mass stars indicate that super-Earth and Neptune-mass planets are more frequent than gas giants around such stars, in agreement with core accretion theory of planet formation. Using precise radial velocities derived from visual and near-infrared spectra, we report the discovery of a giant planet with a minimum mass of 0.46 Jupiter masses in an eccentric 204-day orbit around the very low-mass star GJ 3512. Dynamical models show that the high eccentricity of the orbit is most likely explained from planet-planet interactions. The reported planetary system challenges current formation theories and puts stringent constraints on the accretion and migration rates of planet formation and evolution models, indicating that disc instability may be more efficient in forming planets than previously thought.
description: Manuscript author version. 41 pages, 11 figures