6533b829fe1ef96bd128985a
RESEARCH PRODUCT
A giant exoplanet orbiting a very-low-mass star challenges planet formation models
Jesus M. CarroA. GuijarroF. Hernández OteroJavier López-santiagoE. MirabetE. MirabetEduardo L. MartínHugo M. TaberneroH. Martínez-rodríguezH. Martínez-rodríguezAntonio ClaretMartin KürsterFlorian RodlerFlorian RodlerBirgit FuhrmeisterM. LlamasZ. M. BerdiñasZ. M. BerdiñasThomas HenningA. RosichOtmar StahlGuillem Anglada-escudéGuillem Anglada-escudéLuigi ManciniE. W. GuentherP. HukeL. González-cuestaL. González-cuestaRalf LaunhardtF. F. BauerIgnasi RibasD. BarochE. N. JohnsonM. LafargaGrzegorz NowakGrzegorz NowakPriyanka ChaturvediM. Ammler-von EiffM. R. Zapatero OsorioV. WolthoffE. RodriguezL. F. SarmientoE. Sánchez-blancoLuisa LaraC. Del BurgoM. López Del FresnoArtie P. HatzesS. LalithaM. KehrSimon TullochF. J. LázaroD. MontesJ. KlüterMelvyn B. DaviesF. J. AceitunoS. Martin-ruizR. González-peinadoJuan Luis CanoFrancesc VilardellAviv OfirF. J. AbellánF. J. AbellánJ. ColoméC. Cardona GuillénC. Cardona GuillénMathias ZechmeisterUrs MallD. HintzRichard P. NelsonI. M. FerroV. M. PasseggerM. Cortés-contrerasP. Martín-fernándezM. BrinkmöllerEvangelos NagelMichael PerrymanOvidio RabazaOvidio RabazaJose Antonio PascualA. KaminskiM. PergerGilles BergondD. Pérez MedialdeaRemo BurnJ. I. González HernándezJ. I. González HernándezB. Arroyo-torresRafael LuqueRafael LuqueMartin SchleckerArmin HuberA. Fernández-martínM. J. López-gonzálezS. SabottaG. VeredasA. Ramón BallestaE. González ÁLvarezFei YanHolger MandelJ. KemmerJ. I. Vico-linaresS. Becerril-jarqueJorge Sanz-forcadaPaula SarkisR. P. HedrosaRafael ReboloRafael ReboloJ. StürmerJ. StürmerA. Sánchez-lópezTrifon TrifonovF. LabargaJürgen H. M. M. SchmittNúria Casasayas-barrisNúria Casasayas-barrisAlexandre EmsenhuberSebastian SchaferJ. A. Marín MolinaAlexander J. MustillAnders JohansenH. Magán MadinabeitiaHubert KlahrF. J. Alonso-florianoF. J. Alonso-florianoS. V. JeffersI. Gallardo CavaI. Gallardo CavaE. De JuanAndreas SchweitzerPeter H. HauschildtRicardo DordaP. RedondoM. AzzaroM. SalzM. AbrilJuan Carlos SuárezJuan Carlos SuárezHans-walter RixCarlos CifuentesCarlos CifuentesWalter SeifertM. L. García VargasPedro J. AmadoJ. WinklerR. Hernández ArabíS. SadegiS. SadegiI. HermeloA. Rodríguez TrinidadG. HolgadoKarl WagnerVianak NaranjoS. CzeslaM. KimM. KimD. BenítezSabine ReffertA. PavlovLluis GesaNicolas LodieuNicolas LodieuLisa NortmannLisa NortmannD. Galadí-enríquezA. MoyaA. MoyaA. MoyaAndreas QuirrenbachJose A. CaballeroJ. AceitunoEnrique HerreroJuan Carlos MoralesE. CasalEmilio MarfilEnrique SolanoDiana KossakowskiE. Díez-alonsoE. Díez-alonsoJ.-l. LizonJ. F. López SalasM. LampónM. C. CárdenasP. SchöferAnsgar ReinersR. Calvo-ortegaT. StuberR. AntonaA. Garcia-piquerLev Tal-orLev Tal-orN. LabicheAlfredo SotaAna Pérez-calpenaDavid BarradoEnric PalleEnric PalleStefan DreizlerCristina Rodríguez-lópezVíctor J. S. BéjarVíctor J. S. BéjarS. StockM. FernandezChris MordasiniE. De GuindosS. PedrazH.-j. HagenJaime GuardiaA. KlutschA. KlutschM. A. Sánchez CarrascoChristopher MarvinV. Casanovasubject
010504 meteorology & atmospheric sciencesGas giant530 PhysicsFOS: Physical sciencesMinimum massAstrophysics::Cosmology and Extragalactic Astrophysics7. Clean energy01 natural sciencesSettore FIS/05 - Astronomia e AstrofisicaPlanet0103 physical sciencesAstrophysics::Solar and Stellar Astrophysics010303 astronomy & astrophysicsSolar and Stellar Astrophysics (astro-ph.SR)Astrophysics::Galaxy Astrophysics0105 earth and related environmental sciencesEarth and Planetary Astrophysics (astro-ph.EP)PhysicsMultidisciplinary520 AstronomyGiant planetAstronomyPlanetary system620 EngineeringAccretion (astrophysics)ExoplanetOrbitAstrophysics - Solar and Stellar Astrophysics13. Climate actionAstrophysics::Earth and Planetary AstrophysicsAstrophysics - Earth and Planetary Astrophysicsdescription
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
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-09-27 | Science |