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

J. C. Morales; A. J. Mustill; I. Ribas; M. B. Davies; A. Reiners; F. F. Bauer; D. Kossakowski; E. Herrero; E. Rodriguez; M. J. López-González; C. Rodriguez-López; V. J. S. Béjar; L. González-Cuesta; R. Luque; E. Pallé; M. Perger; D. Baroch; A. Johansen; H. Klahr; C. Mordasini; G. Anglada-Escudé; J. A. Caballero; M. Cortés-Contreras; S. Dreizler; M. Lafarga; E. Nagel; V. M. Passegger; S. Reffert; A. Rosich; A. Schweitzer; L. Tal-Or; T. Trifonov; M. Zechmeister; A. Quirrenbach; P. J. Amado; E. W. Guenther; H.-J. Hagen; T. Henning; S. V. Jeffers; A. Kaminski; M. Kürster; D. Montes; W. Seifert; F. J. Abellán; M. Abril; J. Aceituno; F. J. Aceituno; F. J. Alonso-Floriano; M. Ammler-von Eiff; R. Antona; B. Arroyo-Torres; M. Azzaro; D. Barrado; S. Becerril-Jarque; D. Benitez; Z. M. Berdiñas; G. Bergond; M. Brinkmöller; C. del Burgo; R. Burn; R. Calvo-Ortega; J. Cano; M. C. Cárdenas; C. Cardona Guillén; J. Carro; E. Casal; V. Casanova; N. Casasayas-Barris; P. Chaturvedi; C. Cifuentes; A. Claret; J. Colomé; S. Czesla; E. Diez-Alonso; R. Dorda; A. Emsenhuber; M. Fernández; A. Fernández-Martin; I. M. Ferro; B. Fuhrmeister; D. Galadi-Enriquez; I. Gallardo Cava; M. L. Garcia Vargas; A. Garcia-Piquer; L. Gesa; E. González-Álvarez; J. I. González Hernández; R. González-Peinado; J. Guàrdia; A. Guijarro; E. de Guindos; A. P. Hatzes; P. H. Hauschildt; R. P. Hedrosa; I. Hermelo; R. Hernández Arabi; F. Hernández Otero; D. Hintz; G. Holgado; A. Huber; P. Huke; E. N. Johnson; E. de Juan; M. Kehr; J. Kemmer; M. Kim; J. Klüter; A. Klutsch; F. Labarga; N. Labiche; S. Lalitha; M. Lampón; L. M. Lara; R. Launhardt; F. J. Lázaro; J.-L. Lizon; M. Llamas; N. Lodieu; M. López del Fresno; J. F. López Salas; J. López-Santiago; H. Magán Madinabeitia; U. Mall; L. Mancini; H. Mandel; E. Marfil; J. A. Marin Molina; E. L. Martin; P. Martin-Fernández; S. Martin-Ruiz; H. Martinez-Rodriguez; C. J. Marvin; E. Mirabet; A. Moya; V. Naranjo; R. P. Nelson; L. Nortmann; G. Nowak; A. Ofir; J. Pascual; A. Pavlov; S. Pedraz; D. Pérez Medialdea; A. Pérez-Calpena; M. A. C. Perryman; O. Rabaza; A. Ramón Ballesta; R. Rebolo; P. Redondo; H.-W. Rix; F. Rodler; A. Rodriguez Trinidad; S. Sabotta; S. Sadegi; M. Salz; E. Sánchez-Blanco; M. A. Sánchez Carrasco; A. Sánchez-López; J. Sanz-Forcada; P. Sarkis; L. F. Sarmiento; S. Schäfer; M. Schlecker; J. H. M. M. Schmitt; P. Schöfer; E. Solano; A. Sota; O. Stahl; S. Stock; T. Stuber; J. Stürmer; J. C. Suárez; H. M. Tabernero; S. M. Tulloch; G. Veredas; J. I. Vico-Linares; F. Vilardell; K. Wagner; J. Winkler; V. Wolthoff; F. Yan; M. R. Zapatero Osorio

doi:10.1126/science.aax3198

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

J. C. Morales, A. J. Mustill, I. Ribas, M. B. Davies, A. Reiners, F. F. Bauer, D. Kossakowski, E. Herrero, E. Rodriguez, M. J. López-González, C. Rodriguez-López, V. J. S. Béjar, L. González-Cuesta, R. Luque, E. Pallé, M. Perger, D. Baroch, A. Johansen, H. Klahr, C. MordasiniG. Anglada-Escudé, J. A. Caballero, M. Cortés-Contreras, S. Dreizler, M. Lafarga, E. Nagel, V. M. Passegger, S. Reffert, A. Rosich, A. Schweitzer, L. Tal-Or, T. Trifonov, M. Zechmeister, A. Quirrenbach, P. J. Amado, E. W. Guenther, H.-J. Hagen, T. Henning, S. V. Jeffers, A. Kaminski, M. Kürster, D. Montes, W. Seifert, F. J. Abellán, M. Abril, J. Aceituno, F. J. Aceituno, F. J. Alonso-Floriano, M. Ammler-von Eiff, R. Antona, B. Arroyo-Torres, M. Azzaro, D. Barrado, S. Becerril-Jarque, D. Benitez, Z. M. Berdiñas, G. Bergond, M. Brinkmöller, C. del Burgo, R. Burn, R. Calvo-Ortega, J. Cano, M. C. Cárdenas, C. Cardona Guillén, J. Carro, E. Casal, V. Casanova, N. Casasayas-Barris, P. Chaturvedi, C. Cifuentes, A. Claret, J. Colomé, S. Czesla, E. Diez-Alonso, R. Dorda, A. Emsenhuber, M. Fernández, A. Fernández-Martin, I. M. Ferro, B. Fuhrmeister, D. Galadi-Enriquez, I. Gallardo Cava, M. L. Garcia Vargas, A. Garcia-Piquer, L. Gesa, E. González-Álvarez, J. I. González Hernández, R. González-Peinado, J. Guàrdia, A. Guijarro, E. de Guindos, A. P. Hatzes, P. H. Hauschildt, R. P. Hedrosa, I. Hermelo, R. Hernández Arabi, F. Hernández Otero, D. Hintz, G. Holgado, A. Huber, P. Huke, E. N. Johnson, E. de Juan, M. Kehr, J. Kemmer, M. Kim, J. Klüter, A. Klutsch, F. Labarga, N. Labiche, S. Lalitha, M. Lampón, L. M. Lara, R. Launhardt, F. J. Lázaro, J.-L. Lizon, M. Llamas, N. Lodieu, M. López del Fresno, J. F. López Salas, J. López-Santiago, H. Magán Madinabeitia, U. Mall, L. Mancini, H. Mandel, E. Marfil, J. A. Marin Molina, E. L. Martin, P. Martin-Fernández, S. Martin-Ruiz, H. Martinez-Rodriguez, C. J. Marvin, E. Mirabet, A. Moya, V. Naranjo, R. P. Nelson, L. Nortmann, G. Nowak, A. Ofir, J. Pascual, A. Pavlov, S. Pedraz, D. Pérez Medialdea, A. Pérez-Calpena, M. A. C. Perryman, O. Rabaza, A. Ramón Ballesta, R. Rebolo, P. Redondo, H.-W. Rix, F. Rodler, A. Rodriguez Trinidad, S. Sabotta, S. Sadegi, M. Salz, E. Sánchez-Blanco, M. A. Sánchez Carrasco, A. Sánchez-López, J. Sanz-Forcada, P. Sarkis, L. F. Sarmiento, S. Schäfer, M. Schlecker, J. H. M. M. Schmitt, P. Schöfer, E. Solano, A. Sota, O. Stahl, S. Stock, T. Stuber, J. Stürmer, J. C. Suárez, H. M. Tabernero, S. M. Tulloch, G. Veredas, J. I. Vico-Linares, F. Vilardell, K. Wagner, J. Winkler, V. Wolthoff, F. Yan, M. R. Zapatero Osorio

eSSENCE: The e-Science Collaboration

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	1441-1445
Number of pages	5
Journal	Science
Volume	365
Issue number	6460
DOIs	https://doi.org/10.1126/science.aax3198
Publication status	Published - 2019 Sept 27

Subject classification (UKÄ)

Astronomy, Astrophysics and Cosmology

Access to Document

10.1126/science.aax3198

https://arxiv.org/abs/1909.12174

IMPACT: IMPACT: Comets, asteroids and the habitability of planets
Davies, M. B. (PI), Johansen, A. (CoI) & Birger, S. (CoI)
Knut and Alice Wallenberg Foundation
2015/07/01 → 2020/06/30
Project: Research

Cite this

Morales, J. C., Mustill, A. J., Ribas, I., Davies, M. B., Reiners, A., Bauer, F. F., Kossakowski, D., Herrero, E., Rodriguez, E., López-González, M. J., Rodriguez-López, C., Béjar, V. J. S., González-Cuesta, L., Luque, R., Pallé, E., Perger, M., Baroch, D., Johansen, A., Klahr, H., ... Osorio, M. R. Z. (2019). A giant exoplanet orbiting a very-low-mass star challenges planet formation models. Science, 365(6460), 1441-1445. https://doi.org/10.1126/science.aax3198

@article{1629e13adaf9453bbd992b8b18cbff36,

title = "A giant exoplanet orbiting a very-low-mass star challenges planet formation models",

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.",

author = "Morales, {J. C.} and Mustill, {A. J.} and I. Ribas and Davies, {M. B.} and A. Reiners and Bauer, {F. F.} and D. Kossakowski and E. Herrero and E. Rodriguez and L{\'o}pez-Gonz{\'a}lez, {M. J.} and C. Rodriguez-L{\'o}pez and B{\'e}jar, {V. J. S.} and L. Gonz{\'a}lez-Cuesta and R. Luque and E. Pall{\'e} and M. Perger and D. Baroch and A. Johansen and H. Klahr and C. Mordasini and G. Anglada-Escud{\'e} and Caballero, {J. A.} and M. Cort{\'e}s-Contreras and S. Dreizler and M. Lafarga and E. Nagel and Passegger, {V. M.} and S. Reffert and A. Rosich and A. Schweitzer and L. Tal-Or and T. Trifonov and M. Zechmeister and A. Quirrenbach and Amado, {P. J.} and Guenther, {E. W.} and H.-J. Hagen and T. Henning and Jeffers, {S. V.} and A. Kaminski and M. K{\"u}rster and D. Montes and W. Seifert and Abell{\'a}n, {F. J.} and M. Abril and J. Aceituno and Aceituno, {F. J.} and Alonso-Floriano, {F. J.} and {Ammler-von Eiff}, M. and R. Antona and B. Arroyo-Torres and M. Azzaro and D. Barrado and S. Becerril-Jarque and D. Benitez and Berdi{\~n}as, {Z. M.} and G. Bergond and M. Brinkm{\"o}ller and {del Burgo}, C. and R. Burn and R. Calvo-Ortega and J. Cano and C{\'a}rdenas, {M. C.} and Guill{\'e}n, {C. Cardona} and J. Carro and E. Casal and V. Casanova and N. Casasayas-Barris and P. Chaturvedi and C. Cifuentes and A. Claret and J. Colom{\'e} and S. Czesla and E. Diez-Alonso and R. Dorda and A. Emsenhuber and M. Fern{\'a}ndez and A. Fern{\'a}ndez-Martin and Ferro, {I. M.} and B. Fuhrmeister and D. Galadi-Enriquez and Cava, {I. Gallardo} and Vargas, {M. L. Garcia} and A. Garcia-Piquer and L. Gesa and E. Gonz{\'a}lez-{\'A}lvarez and Hern{\'a}ndez, {J. I. Gonz{\'a}lez} and R. Gonz{\'a}lez-Peinado and J. Gu{\`a}rdia and A. Guijarro and {de Guindos}, E. and Hatzes, {A. P.} and Hauschildt, {P. H.} and Hedrosa, {R. P.} and I. Hermelo and Arabi, {R. Hern{\'a}ndez} and Otero, {F. Hern{\'a}ndez} and D. Hintz and G. Holgado and A. Huber and P. Huke and Johnson, {E. N.} and {de Juan}, E. and M. Kehr and J. Kemmer and M. Kim and J. Kl{\"u}ter and A. Klutsch and F. Labarga and N. Labiche and S. Lalitha and M. Lamp{\'o}n and Lara, {L. M.} and R. Launhardt and L{\'a}zaro, {F. J.} and J.-L. Lizon and M. Llamas and N. Lodieu and {L{\'o}pez del Fresno}, M. and Salas, {J. F. L{\'o}pez} and J. L{\'o}pez-Santiago and Madinabeitia, {H. Mag{\'a}n} and U. Mall and L. Mancini and H. Mandel and E. Marfil and Molina, {J. A. Marin} and Martin, {E. L.} and P. Martin-Fern{\'a}ndez and S. Martin-Ruiz and H. Martinez-Rodriguez and Marvin, {C. J.} and E. Mirabet and A. Moya and V. Naranjo and Nelson, {R. P.} and L. Nortmann and G. Nowak and A. Ofir and J. Pascual and A. Pavlov and S. Pedraz and Medialdea, {D. P{\'e}rez} and A. P{\'e}rez-Calpena and Perryman, {M. A. C.} and O. Rabaza and Ballesta, {A. Ram{\'o}n} and R. Rebolo and P. Redondo and H.-W. Rix and F. Rodler and Trinidad, {A. Rodriguez} and S. Sabotta and S. Sadegi and M. Salz and E. S{\'a}nchez-Blanco and Carrasco, {M. A. S{\'a}nchez} and A. S{\'a}nchez-L{\'o}pez and J. Sanz-Forcada and P. Sarkis and Sarmiento, {L. F.} and S. Sch{\"a}fer and M. Schlecker and Schmitt, {J. H. M. M.} and P. Sch{\"o}fer and E. Solano and A. Sota and O. Stahl and S. Stock and T. Stuber and J. St{\"u}rmer and Su{\'a}rez, {J. C.} and Tabernero, {H. M.} and Tulloch, {S. M.} and G. Veredas and Vico-Linares, {J. I.} and F. Vilardell and K. Wagner and J. Winkler and V. Wolthoff and F. Yan and Osorio, {M. R. Zapatero}",

year = "2019",

month = sep,

day = "27",

doi = "10.1126/science.aax3198",

language = "English",

volume = "365",

pages = "1441--1445",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science (AAAS)",

number = "6460",

}

Morales, JC, Mustill, AJ, Ribas, I, Davies, MB, Reiners, A, Bauer, FF, Kossakowski, D, Herrero, E, Rodriguez, E, López-González, MJ, Rodriguez-López, C, Béjar, VJS, González-Cuesta, L, Luque, R, Pallé, E, Perger, M, Baroch, D, Johansen, A, Klahr, H, Mordasini, C, Anglada-Escudé, G, Caballero, JA, Cortés-Contreras, M, Dreizler, S, Lafarga, M, Nagel, E, Passegger, VM, Reffert, S, Rosich, A, Schweitzer, A, Tal-Or, L, Trifonov, T, Zechmeister, M, Quirrenbach, A, Amado, PJ, Guenther, EW, Hagen, H-J, Henning, T, Jeffers, SV, Kaminski, A, Kürster, M, Montes, D, Seifert, W, Abellán, FJ, Abril, M, Aceituno, J, Aceituno, FJ, Alonso-Floriano, FJ, Ammler-von Eiff, M, Antona, R, Arroyo-Torres, B, Azzaro, M, Barrado, D, Becerril-Jarque, S, Benitez, D, Berdiñas, ZM, Bergond, G, Brinkmöller, M, del Burgo, C, Burn, R, Calvo-Ortega, R, Cano, J, Cárdenas, MC, Guillén, CC, Carro, J, Casal, E, Casanova, V, Casasayas-Barris, N, Chaturvedi, P, Cifuentes, C, Claret, A, Colomé, J, Czesla, S, Diez-Alonso, E, Dorda, R, Emsenhuber, A, Fernández, M, Fernández-Martin, A, Ferro, IM, Fuhrmeister, B, Galadi-Enriquez, D, Cava, IG, Vargas, MLG, Garcia-Piquer, A, Gesa, L, González-Álvarez, E, Hernández, JIG, González-Peinado, R, Guàrdia, J, Guijarro, A, de Guindos, E, Hatzes, AP, Hauschildt, PH, Hedrosa, RP, Hermelo, I, Arabi, RH, Otero, FH, Hintz, D, Holgado, G, Huber, A, Huke, P, Johnson, EN, de Juan, E, Kehr, M, Kemmer, J, Kim, M, Klüter, J, Klutsch, A, Labarga, F, Labiche, N, Lalitha, S, Lampón, M, Lara, LM, Launhardt, R, Lázaro, FJ, Lizon, J-L, Llamas, M, Lodieu, N, López del Fresno, M, Salas, JFL, López-Santiago, J, Madinabeitia, HM, Mall, U, Mancini, L, Mandel, H, Marfil, E, Molina, JAM, Martin, EL, Martin-Fernández, P, Martin-Ruiz, S, Martinez-Rodriguez, H, Marvin, CJ, Mirabet, E, Moya, A, Naranjo, V, Nelson, RP, Nortmann, L, Nowak, G, Ofir, A, Pascual, J, Pavlov, A, Pedraz, S, Medialdea, DP, Pérez-Calpena, A, Perryman, MAC, Rabaza, O, Ballesta, AR, Rebolo, R, Redondo, P, Rix, H-W, Rodler, F, Trinidad, AR, Sabotta, S, Sadegi, S, Salz, M, Sánchez-Blanco, E, Carrasco, MAS, Sánchez-López, A, Sanz-Forcada, J, Sarkis, P, Sarmiento, LF, Schäfer, S, Schlecker, M, Schmitt, JHMM, Schöfer, P, Solano, E, Sota, A, Stahl, O, Stock, S, Stuber, T, Stürmer, J, Suárez, JC, Tabernero, HM, Tulloch, SM, Veredas, G, Vico-Linares, JI, Vilardell, F, Wagner, K, Winkler, J, Wolthoff, V, Yan, F & Osorio, MRZ 2019, 'A giant exoplanet orbiting a very-low-mass star challenges planet formation models', Science, vol. 365, no. 6460, pp. 1441-1445. https://doi.org/10.1126/science.aax3198

TY - JOUR

T1 - A giant exoplanet orbiting a very-low-mass star challenges planet formation models

AU - Morales, J. C.

AU - Mustill, A. J.

AU - Ribas, I.

AU - Davies, M. B.

AU - Reiners, A.

AU - Bauer, F. F.

AU - Kossakowski, D.

AU - Herrero, E.

AU - Rodriguez, E.

AU - López-González, M. J.

AU - Rodriguez-López, C.

AU - Béjar, V. J. S.

AU - González-Cuesta, L.

AU - Luque, R.

AU - Pallé, E.

AU - Perger, M.

AU - Baroch, D.

AU - Johansen, A.

AU - Klahr, H.

AU - Mordasini, C.

AU - Anglada-Escudé, G.

AU - Caballero, J. A.

AU - Cortés-Contreras, M.

AU - Dreizler, S.

AU - Lafarga, M.

AU - Nagel, E.

AU - Passegger, V. M.

AU - Reffert, S.

AU - Rosich, A.

AU - Schweitzer, A.

AU - Tal-Or, L.

AU - Trifonov, T.

AU - Zechmeister, M.

AU - Quirrenbach, A.

AU - Amado, P. J.

AU - Guenther, E. W.

AU - Hagen, H.-J.

AU - Henning, T.

AU - Jeffers, S. V.

AU - Kaminski, A.

AU - Kürster, M.

AU - Montes, D.

AU - Seifert, W.

AU - Abellán, F. J.

AU - Abril, M.

AU - Aceituno, J.

AU - Aceituno, F. J.

AU - Alonso-Floriano, F. J.

AU - Ammler-von Eiff, M.

AU - Antona, R.

AU - Arroyo-Torres, B.

AU - Azzaro, M.

AU - Barrado, D.

AU - Becerril-Jarque, S.

AU - Benitez, D.

AU - Berdiñas, Z. M.

AU - Bergond, G.

AU - Brinkmöller, M.

AU - del Burgo, C.

AU - Burn, R.

AU - Calvo-Ortega, R.

AU - Cano, J.

AU - Cárdenas, M. C.

AU - Guillén, C. Cardona

AU - Carro, J.

AU - Casal, E.

AU - Casanova, V.

AU - Casasayas-Barris, N.

AU - Chaturvedi, P.

AU - Cifuentes, C.

AU - Claret, A.

AU - Colomé, J.

AU - Czesla, S.

AU - Diez-Alonso, E.

AU - Dorda, R.

AU - Emsenhuber, A.

AU - Fernández, M.

AU - Fernández-Martin, A.

AU - Ferro, I. M.

AU - Fuhrmeister, B.

AU - Galadi-Enriquez, D.

AU - Cava, I. Gallardo

AU - Vargas, M. L. Garcia

AU - Garcia-Piquer, A.

AU - Gesa, L.

AU - González-Álvarez, E.

AU - Hernández, J. I. González

AU - González-Peinado, R.

AU - Guàrdia, J.

AU - Guijarro, A.

AU - de Guindos, E.

AU - Hatzes, A. P.

AU - Hauschildt, P. H.

AU - Hedrosa, R. P.

AU - Hermelo, I.

AU - Arabi, R. Hernández

AU - Otero, F. Hernández

AU - Hintz, D.

AU - Holgado, G.

AU - Huber, A.

AU - Huke, P.

AU - Johnson, E. N.

AU - de Juan, E.

AU - Kehr, M.

AU - Kemmer, J.

AU - Kim, M.

AU - Klüter, J.

AU - Klutsch, A.

AU - Labarga, F.

AU - Labiche, N.

AU - Lalitha, S.

AU - Lampón, M.

AU - Lara, L. M.

AU - Launhardt, R.

AU - Lázaro, F. J.

AU - Lizon, J.-L.

AU - Llamas, M.

AU - Lodieu, N.

AU - López del Fresno, M.

AU - Salas, J. F. López

AU - López-Santiago, J.

AU - Madinabeitia, H. Magán

AU - Mall, U.

AU - Mancini, L.

AU - Mandel, H.

AU - Marfil, E.

AU - Molina, J. A. Marin

AU - Martin, E. L.

AU - Martin-Fernández, P.

AU - Martin-Ruiz, S.

AU - Martinez-Rodriguez, H.

AU - Marvin, C. J.

AU - Mirabet, E.

AU - Moya, A.

AU - Naranjo, V.

AU - Nelson, R. P.

AU - Nortmann, L.

AU - Nowak, G.

AU - Ofir, A.

AU - Pascual, J.

AU - Pavlov, A.

AU - Pedraz, S.

AU - Medialdea, D. Pérez

AU - Pérez-Calpena, A.

AU - Perryman, M. A. C.

AU - Rabaza, O.

AU - Ballesta, A. Ramón

AU - Rebolo, R.

AU - Redondo, P.

AU - Rix, H.-W.

AU - Rodler, F.

AU - Trinidad, A. Rodriguez

AU - Sabotta, S.

AU - Sadegi, S.

AU - Salz, M.

AU - Sánchez-Blanco, E.

AU - Carrasco, M. A. Sánchez

AU - Sánchez-López, A.

AU - Sanz-Forcada, J.

AU - Sarkis, P.

AU - Sarmiento, L. F.

AU - Schäfer, S.

AU - Schlecker, M.

AU - Schmitt, J. H. M. M.

AU - Schöfer, P.

AU - Solano, E.

AU - Sota, A.

AU - Stahl, O.

AU - Stock, S.

AU - Stuber, T.

AU - Stürmer, J.

AU - Suárez, J. C.

AU - Tabernero, H. M.

AU - Tulloch, S. M.

AU - Veredas, G.

AU - Vico-Linares, J. I.

AU - Vilardell, F.

AU - Wagner, K.

AU - Winkler, J.

AU - Wolthoff, V.

AU - Yan, F.

AU - Osorio, M. R. Zapatero

PY - 2019/9/27

Y1 - 2019/9/27

N2 - 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.

AB - 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.

U2 - 10.1126/science.aax3198

DO - 10.1126/science.aax3198

M3 - Article

C2 - 31604272

SN - 0036-8075

VL - 365

SP - 1441

EP - 1445

JO - Science

JF - Science

IS - 6460

ER -

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

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IMPACT: IMPACT: Comets, asteroids and the habitability of planets

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