1. A giant exoplanet orbiting a very-low-mass star challenges planet formation models
- Author
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Ministerio de Ciencia, Innovación y Universidades (España), European Commission, Israel Science Foundation, Consejo Nacional de Ciencia y Tecnología (México), German Centre for Air and Space Travel, European Research Council, German Research Foundation, National Science Foundation (US), Swiss National Science Foundation, Queen Mary University of London, Science and Technology Facilities Council (UK), Knut and Alice Wallenberg Foundation, Ribas, Ignasi, López González, Maria J., Caballero, J. A., Cortés-Contreras, M., Amado, Pedro J., Abellán, F. J., Abril, Miguel, Barrado y Navascués, David, Cárdenas Vázquez, María Concepción, Claret dos Santos, Antonio, Colomé, J., Holgado, G., Sarkis, Paula, Schlecker, M., Schmitt, Jürgen H. M. M., Sarmiento, L. F., Kehr, M., Schöfer, P., Stahl, O., Stock, S., Solano, E., López Salas, J.F., Stuber, T., Suárez, J.C., Tabernero, H. M., Stürmer, J., Tulloch, S.M., Vico Linares, J.I., Vilardell, Francesc, Veredas, G., Wagner, K., Wolthoff, V., Yan, F., Winkler, J., Díez-Alonso, E., Dorda, R., Zapatero Osorio, María Rosa, Mandel, H., Emsenhuber, A., Ferro, I.M., Fuhrmeister, Birgit, Fernández, M., Pavlov, A., Galadí-Enriquez, D., García-Piquer, A., Gesa, Lluis, Cava, I. Gallardo, González-Álvarez, E., González-Peinado, R., Guàrdia, J., González Hernández, Jonay I., Guijarro, A., Hatzes, Artie P., Hauschildt, P. H., de Guindos, E., Hedrosa, R.P., Arabi, R.H., Hermelo, I., Rabaza, O., Hernández Otero, F., Huber, A., Huke, P., Hintz, D., Schäfer, S., Johnson, E.N., Kemmer, J., Kim, M., de Juan, E., Klüter, J., Labarga, F., Labiche, N., Klutsch, A., Lalitha, S., Lara, Luisa María, Launhardt, R., Lampón, M., Lázaro, F. J., Llamas, M., Lizon, J. -L., Sota, A., Lodieu, N., López-Santiago, J., Magán Madinabeitia, H., López del Fresno, M., Czesla, S., Mall, U., Marfil, E., Marín Molina, J.A., Mancini, L., Martín, Eduardo Lorenzo, Martín-Ruiz, Susana, Martínez-Rodríguez, Héctor, Martín-Fernández, P., Marvin, C. J., Moya, A., Naranjo, V., Miralda-Escudé, Jordi, Nelson, R. P., Nowak, G., Nortmann, L., Fernández-Martín, A., Ofir, A., Pedraz, S., Medialdea, D. Pérez, Pascual, J., García Vargas, M. L., Pérez-Calpena, A., Ballesta, A. Ramón, Rebolo López, Rafael, Perryman, M. A. C., Redondo, P., Rodler, F., Rodríguez Trinidad, A., Rix, H.-W., Sabotta, S., Salz, M., Sánchez-Blanco, E., Sadegi, S., Sánchez Carrasco, Miguel Andrés, Sanz-Forcada, J., Sánchez-López, A., Ministerio de Ciencia, Innovación y Universidades (España), European Commission, Israel Science Foundation, Consejo Nacional de Ciencia y Tecnología (México), German Centre for Air and Space Travel, European Research Council, German Research Foundation, National Science Foundation (US), Swiss National Science Foundation, Queen Mary University of London, Science and Technology Facilities Council (UK), Knut and Alice Wallenberg Foundation, Ribas, Ignasi, López González, Maria J., Caballero, J. A., Cortés-Contreras, M., Amado, Pedro J., Abellán, F. J., Abril, Miguel, Barrado y Navascués, David, Cárdenas Vázquez, María Concepción, Claret dos Santos, Antonio, Colomé, J., Holgado, G., Sarkis, Paula, Schlecker, M., Schmitt, Jürgen H. M. M., Sarmiento, L. F., Kehr, M., Schöfer, P., Stahl, O., Stock, S., Solano, E., López Salas, J.F., Stuber, T., Suárez, J.C., Tabernero, H. M., Stürmer, J., Tulloch, S.M., Vico Linares, J.I., Vilardell, Francesc, Veredas, G., Wagner, K., Wolthoff, V., Yan, F., Winkler, J., Díez-Alonso, E., Dorda, R., Zapatero Osorio, María Rosa, Mandel, H., Emsenhuber, A., Ferro, I.M., Fuhrmeister, Birgit, Fernández, M., Pavlov, A., Galadí-Enriquez, D., García-Piquer, A., Gesa, Lluis, Cava, I. Gallardo, González-Álvarez, E., González-Peinado, R., Guàrdia, J., González Hernández, Jonay I., Guijarro, A., Hatzes, Artie P., Hauschildt, P. H., de Guindos, E., Hedrosa, R.P., Arabi, R.H., Hermelo, I., Rabaza, O., Hernández Otero, F., Huber, A., Huke, P., Hintz, D., Schäfer, S., Johnson, E.N., Kemmer, J., Kim, M., de Juan, E., Klüter, J., Labarga, F., Labiche, N., Klutsch, A., Lalitha, S., Lara, Luisa María, Launhardt, R., Lampón, M., Lázaro, F. J., Llamas, M., Lizon, J. -L., Sota, A., Lodieu, N., López-Santiago, J., Magán Madinabeitia, H., López del Fresno, M., Czesla, S., Mall, U., Marfil, E., Marín Molina, J.A., Mancini, L., Martín, Eduardo Lorenzo, Martín-Ruiz, Susana, Martínez-Rodríguez, Héctor, Martín-Fernández, P., Marvin, C. J., Moya, A., Naranjo, V., Miralda-Escudé, Jordi, Nelson, R. P., Nowak, G., Nortmann, L., Fernández-Martín, A., Ofir, A., Pedraz, S., Medialdea, D. Pérez, Pascual, J., García Vargas, M. L., Pérez-Calpena, A., Ballesta, A. Ramón, Rebolo López, Rafael, Perryman, M. A. C., Redondo, P., Rodler, F., Rodríguez Trinidad, A., Rix, H.-W., Sabotta, S., Salz, M., Sánchez-Blanco, E., Sadegi, S., Sánchez Carrasco, Miguel Andrés, Sanz-Forcada, J., and Sánchez-López, A.
- 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.Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science
- Published
- 2019