A giant exoplanet orbiting a very-low-mass star challenges planet formation models Articles uri icon

authors

  • MORALES SAN-JUAN, JUAN CARLOS
  • Mustill, A. J.
  • Ribas, I.
  • Davies, M. B.
  • Reiners, A.
  • Bauer, F. F.
  • Kossakowski, D.
  • Herrero, E.
  • RODRIGUEZ SENIN, ELENA
  • Lopez-Gonzalez, M. J.
  • Rodriguez-Lopez, C.
  • Bejar, V. J.S.
  • Gonzalez-Cuesta, L.
  • Luque, R.
  • Palle, E.
  • Perger, M.
  • Baroch, D.
  • Johansen, A.
  • Klahr, H.
  • Mordasini, C.
  • Anglada-Escude, G.
  • Caballero, J. A.
  • CORTES-CONTRERAS, M.
  • Dreizler, S.
  • Lafarga, M.
  • Nagel, E.
  • Passegger, V. M.
  • Reffert, S.
  • Rosich, A.
  • Schweitzer, A.
  • Tal-Or, L.
  • Trifonov, T.
  • Zechmeister, M.
  • Quirrenbach, A.
  • Amado, P. J.
  • Guenther, E. W.
  • Hagen, H. J.
  • Jeffers, S. V.
  • TAPPE, HENNING
  • Kaminski, A.
  • Henning, Thomas K.
  • Kürster, M.
  • Montes, D.
  • Seifert, W.
  • Abellan, F. J.
  • Abril, M.
  • Aceituno, J.
  • Aceituno, F. J.
  • Alonso-Floriano, F. J.
  • Ammler-Von Eiff, M.
  • Antona, R.
  • Arroyo-Torres, B.
  • Azzaro, M.
  • BARRADO TIMON, DIEGO
  • Becerril-Jarque, S.
  • Benitez, D.
  • Berdiñas, Z. M.
  • Bergond, G.
  • Brinkmoller, M.
  • Del Burgo, C.
  • Burn, R.
  • Calvo-Ortega, R.
  • Cano, J.
  • Cardenas, M. C.
  • Cardona Guillen, C.
  • CARRO PRIETO, JESUS MARIA
  • Casal, E.
  • Casanova, V.
  • Casasayas-Barris, N.
  • Chaturvedi, P.
  • CIFUENTES CUELLAR, SANDRA CAROLINA
  • Claret, A.
  • Colome, J.
  • Czesla, S.
  • Diez-Alonso, E.
  • Dorda, R.
  • Emsenhuber, A.
  • FERNANDEZ GOMEZ, MANUEL
  • Fernandez-Martin, A.
  • Ferro, I. M.
  • Fuhrmeister, B.
  • Galadi-Enriquez, D.
  • Gallardo Cava, I.
  • Garcia Vargas, M. L.
  • Garcia-Piquer, A.
  • Gesa, L.
  • Gonzalez-Alvarez, E.
  • Gonzalez Hernandez, J. I.
  • Gonzalez-Peinado, R.
  • Guàrdia, J.
  • Guijarro, A.
  • De Guindos, E.
  • Hatzes, A. P.
  • Hauschildt, P. H.
  • Hedrosa, R. P.
  • Hermelo, I.
  • Hernandez Arabi, R.
  • Hernandez Otero, F.
  • Hintz, D.
  • Holgado, G.
  • Huber, A.
  • Huke, P.
  • Johnson, E. N.
  • De Juan, E.
  • Kehr, M.
  • Kemmer, J.
  • Kim, M.
  • Klüter, J.
  • Klutsch, A.
  • Labarga, F.
  • Labiche, N.
  • Lalitha, S.
  • Lampon, M.
  • Lara, L. M.
  • Launhardt, R.
  • Lazaro, F. J.
  • Lizon, J. L.
  • Llamas, M.
  • Lodieu, N.
  • Lopez del Fresno, M.
  • LOPEZ PINTADO, SARA
  • Lopez Salas, J. F.
  • LÓPEZ SANTIAGO, JAVIER
  • Magan Madinabeitia, H.
  • Mall, U.
  • Mancini, L.
  • Mandel, H.
  • Marfil, E.
  • Marin Molina, J. A.
  • Martin, E. L.
  • Martin-Fernandez, P.
  • Martin-Ruiz, S.
  • Martinez-Rodriguez, H.
  • Marvin, C. J.
  • Mirabet, E.
  • Moya, A.
  • Naranjo, V.
  • Nelson, R. P.
  • Nortmann, L.
  • Nowak, G.
  • Ofir, A.
  • PASCUAL CASADO, JAVIER
  • Pavlov, A.
  • Pedraz, S.
  • Perez Medialdea, D.
  • Perez-Calpena, A.
  • Perryman, M. A.C.
  • Rabaza, O.
  • Ramon Ballesta, A.
  • REBOLO GOMEZ, RAFAEL
  • Redondo, P.
  • Rix, H. W.
  • Rodler, F.
  • Rodriguez Trinidad, A.
  • Sabotta, S.
  • Sadegi, S.
  • Salz, M.
  • SANCHEZ BLANCO, EMILIO JOSE
  • Sanchez Carrasco, M. A.
  • SANCHEZ LOPEZ, ALEXIS
  • Sanz-Forcada, J.
  • Sarkis, P.
  • Sarmiento, L. F.
  • Schäfer, S.
  • Schlecker, M.
  • Schmitt, J. H.M.M.
  • Schofer, P.
  • Solano, E.
  • Sota, A.
  • Stahl, O.
  • Stock, S.
  • Stuber, T.
  • Stürmer, J.
  • Suarez, J. C.
  • Tabernero, H. M.
  • Tulloch, S. M.
  • Veredas, G.
  • Vico-Linares, J. I.
  • Vilardell, F.
  • Wagner, K.
  • Winkler, J.
  • Wolthoff, V.
  • Yan, F.
  • Zapatero Osorio, M. R.

publication date

  • September 2019

start page

  • 1441

end page

  • 1445

issue

  • 6460

volume

  • 365

International Standard Serial Number (ISSN)

  • 0036-8075

Electronic International Standard Serial Number (EISSN)

  • 1095-9203

abstract

  • Surveys have shown that super-Earth and Neptune-mass exoplanets are more frequent than gas giants around low-mass stars, as predicted by the core accretion theory of planet formation. We report the discovery of a giant planet around the very-low-mass star GJ 3512, as determined by optical and near-infrared radial-velocity observations. The planet has a minimum mass of 0.46 Jupiter masses, very high for such a small host star, and an eccentric 204-day orbit. Dynamical models show that the high eccentricity is most likely due to planet-planet interactions. We use simulations to demonstrate that the GJ 3512 planetary system challenges generally accepted formation theories, and that it puts constraints on the planet accretion and migration rates. Disk instabilities may be more efficient in forming planets than previously thought.