A giant exoplanet orbiting a very-low-mass star challenges planet formation models
Juan Carlos Morales,Alexander J. Mustill,Ignasi Ribas,Melvyn B. Davies,Ansgar Reiners,F. F. Bauer,Diana Kossakowski,Enrique Herrero,E. Rodriguez,M. J. López-González,Cristina Rodríguez-López,Víctor J. S. Béjar,Víctor J. S. Béjar,L. González-Cuesta,L. González-Cuesta,Rafael Luque,Rafael Luque,Enric Palle,Enric Palle,M. Perger,D. Baroch,Anders Johansen,Hubert Klahr,Chris Mordasini,Guillem Anglada-Escudé,Guillem Anglada-Escudé,Jose A. Caballero,M. Cortés-Contreras,Stefan Dreizler,M. Lafarga,Evangelos Nagel,V. M. Passegger,Sabine Reffert,A. Rosich,Andreas Schweitzer,Lev Tal-Or,Lev Tal-Or,Trifon Trifonov,Mathias Zechmeister,Andreas Quirrenbach,Pedro J. Amado,E. W. Guenther,H.-J. Hagen,Thomas Henning,S. V. Jeffers,A. Kaminski,Martin Kürster,D. Montes,Walter Seifert,F. J. Abellán,F. J. Abellán,M. Abril,J. Aceituno,F. J. Aceituno,F. J. Alonso-Floriano,F. J. Alonso-Floriano,M. Ammler-von Eiff,R. Antona,B. Arroyo-Torres,M. Azzaro,David Barrado,S. Becerril-Jarque,D. Benítez,Z. M. Berdiñas,Z. M. Berdiñas,Gilles Bergond,M. Brinkmöller,C. del Burgo,Remo Burn,R. Calvo-Ortega,Juan Luis Cano,M. C. Cárdenas,C. Cardona Guillén,C. Cardona Guillén,Jesus M. Carro,E. Casal,V. Casanova,Núria Casasayas-Barris,Núria Casasayas-Barris,Priyanka Chaturvedi,Carlos Cifuentes,Carlos Cifuentes,Antonio Claret,J. Colomé,S. Czesla,E. Díez-Alonso,E. Díez-Alonso,Ricardo Dorda,Alexandre Emsenhuber,M. Fernandez,A. Fernández-Martín,I. M. Ferro,Birgit Fuhrmeister,D. Galadí-Enríquez,I. Gallardo Cava,I. Gallardo Cava,M. L. García Vargas,A. Garcia-Piquer,Lluis Gesa,E. González-Álvarez,J. I. González Hernández,J. I. González Hernández,R. González-Peinado,Jaime Guardia,A. Guijarro,E. de Guindos,Artie P. Hatzes,Peter H. Hauschildt,R. P. Hedrosa,I. Hermelo,R. Hernández Arabí,F. Hernández Otero,D. Hintz,G. Holgado,Armin Huber,P. Huke,E. N. Johnson,E. de Juan,M. Kehr,J. Kemmer,M. Kim,M. Kim,J. Klüter,A. Klutsch,A. Klutsch,F. Labarga,N. Labiche,S. Lalitha,M. Lampón,Luisa Lara,Ralf Launhardt,F. J. Lázaro,J.-L. Lizon,M. Llamas,Nicolas Lodieu,Nicolas Lodieu,M. López del Fresno,J. F. López Salas,Javier López-Santiago,H. Magán Madinabeitia,Urs Mall,Luigi Mancini,Holger Mandel,Emilio Marfil,J. A. Marín Molina,Eduardo L. Martín,P. Martín-Fernández,S. Martin-Ruiz,H. Martínez-Rodríguez,H. Martínez-Rodríguez,Christopher Marvin,E. Mirabet,E. Mirabet,A. Moya,A. Moya,A. Moya,Vianak Naranjo,Richard P. Nelson,Lisa Nortmann,Lisa Nortmann,Grzegorz Nowak,Grzegorz Nowak,Aviv Ofir,Jose Antonio Pascual,A. Pavlov,S. Pedraz,D. Pérez Medialdea,Ana Pérez-Calpena,Michael Perryman,Ovidio Rabaza,Ovidio Rabaza,A. Ramón Ballesta,Rafael Rebolo,Rafael Rebolo,P. Redondo,Hans-Walter Rix,Florian Rodler,Florian Rodler,A. Rodríguez Trinidad,S. Sabotta,S. Sadegi,S. Sadegi,M. Salz,E. Sánchez-Blanco,M. A. Sánchez Carrasco,A. Sánchez-López,Jorge Sanz-Forcada,Paula Sarkis,L. F. Sarmiento,Sebastian Schafer,Martin Schlecker,Jürgen H. M. M. Schmitt,P. Schöfer,Enrique Solano,Alfredo Sota,Otmar Stahl,S. Stock,T. Stuber,J. Stürmer,J. Stürmer,Juan Carlos Suárez,Juan Carlos Suárez,Hugo M. Tabernero,Simon Tulloch,G. Veredas,J. I. Vico-Linares,Francesc Vilardell,Karl Wagner,J. Winkler,V. Wolthoff,Fei Yan,M. R. Zapatero Osorio +211 more
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In this article, the authors reported the discovery of a giant planet around the very low-mass star GJ 3512, as determined by optical and near-infrared radial-velocity observations.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.read more
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Journal ArticleDOI
Evolution of the Radius Valley around Low-mass Stars from Kepler and K2
Ryan Cloutier,Kristen Menou +1 more
TL;DR: In this article, the occurrence rate of small close-in planets around low-mass dwarf stars using the known planet populations from the Kepler and K2 missions was analyzed and the slope of the radius valley was shown to be $r{p,\text{valley}} \propto F^{-0.060\pm 0.025}$ which bears the opposite sign from that measured around Sun-like stars.
Journal ArticleDOI
CARMENES input catalogue of M dwarfs: V. Luminosities, colours, and spectral energy distributions
Carlos Cifuentes,J. A. Caballero,M. Cortés-Contreras,D. Montes,F. J. Abellán,Ricardo Dorda,G. Holgado,M. R. Zapatero Osorio,Juan Carlos Morales,P. J. Amado,V. M. Passegger,Andreas Quirrenbach,Ansgar Reiners,Ignasi Ribas,Jorge Sanz-Forcada,Andreas Schweitzer,Walter Seifert,Enrique Solano +17 more
TL;DR: In this paper, a comprehensive multi-band photometric analysis involving spectral energy distributions, luminosities, absolute magnitudes, colours, and spectral types, from which they have derived basic astrophysical parameters.
Journal ArticleDOI
The CARMENES search for exoplanets around M dwarfs: Planet occurrence rates from a subsample of 71 stars
S. Sabotta,Martin Schlecker,Priyanka Chaturvedi,E. W. Guenther,I. Muñoz Rodríguez,J. C. Muñoz Sánchez,J. A. Caballero,Y. Shan,Sabine Reffert,Ignasi Ribas,Ansgar Reiners,Artie P. Hatzes,P. J. Amado,Hubert Klahr,Juan Carlos Morales,Andreas Quirrenbach,Th. Henning,Stefan Dreizler,Enric Palle,Enric Palle,M. Perger,M. Azzaro,Sandra V. Jeffers,A. Kaminski,M. Kürster,M. Lafarga,M. Lafarga,D. Montes,V. M. Passegger,Mathias Zechmeister +29 more
TL;DR: In this article, the CARMENES exoplanet survey of M dwarfs has obtained more than 18,000 spectra of 329 nearby M- dwarfs over the past five years as part of its guaranteed time observations (GTO) program, and the authors used injection-and-retrieval experiments on the radial velocity time series to measure detection probabilities.
Posted Content
Planet formation: key mechanisms and global models
TL;DR: A detailed review of six key mechanisms of planet formation can be found in this article, including the structure and evolution of protoplanetary disks, the formation of planetesimals, the creation of growing planets, gas accretion, and giant planet migration.
Journal ArticleDOI
CARMENES input catalogue of M dwarfs V. Luminosities, colours, and spectral energy distributions.
Carlos Cifuentes,J. A. Caballero,M. Cortés-Contreras,D. Montes,F. J. Abellán,Ricardo Dorda,G. Holgado,M. R. Zapatero Osorio,Juan Carlos Morales,P. J. Amado,V. M. Passegger,Andreas Quirrenbach,Ansgar Reiners,Ignasi Ribas,Jorge Sanz-Forcada,Andreas Schweitzer,Walter Seifert,Enrique Solano +17 more
TL;DR: In this article, a comprehensive multi-band photometric analysis involving spectral energy distributions, luminosities, absolute magnitudes, colours, and spectral types, from which they have derived basic astrophysical parameters.
References
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A hybrid symplectic integrator that permits close encounters between massive bodies
TL;DR: In this article, a mixed-variable symplectic integrator is proposed to solve the problem of the potential energy term for the pair undergoing the encounter becoming comparable to the terms representing the unperturbed motion in the Hamiltonian, which can be overcome using a hybrid method in which the close encounter term is integrated using a conventional integrator, whilst the remaining terms are solved symplectically.
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Gaia Data Release 2. Summary of the contents and survey properties
Anthony G. A. Brown,Antonella Vallenari,T. Prusti,J. H. J. de Bruijne,C. Babusiaux,Coryn A. L. Bailer-Jones,M. Biermann,D. W. Evans,L. Eyer,F. Jansen,Carme Jordi,Sergei A. Klioner,U. Lammers,Lennart Lindegren,Xavier Luri,Francois Mignard,C. Panem,Dimitri Pourbaix,Sofia Randich,P. Sartoretti,H. I. Siddiqui,Caroline Soubiran,F. van Leeuwen,Nicholas A. Walton,Frédéric Arenou,Ulrich Bastian,Mark Cropper,R. Drimmel,D. Katz,M. G. Lattanzi,Joost M. Bakker,C. Cacciari,J. Castañeda,L. Chaoul,N. Cheek,F. De Angeli,C. Fabricius,Raphael Guerra,B. Holl,E. Masana,R. Messineo,Nami Mowlavi,K. Nienartowicz,P. Panuzzo,J. Portell,M. Riello,George M. Seabroke,Paolo Tanga,F. Thévenin,G. Gracia-Abril,G. Comoretto,M. Garcia-Reinaldos,D. Teyssier,Martin Altmann,Rene Andrae,M. Audard,I. Bellas-Velidis,K. Benson,Jérôme Berthier,R. Blomme,P. Burgess,G. Busso,Benoit Carry,Alberto Cellino,G. Clementini,M. Clotet,O. Creevey,M. Davidson,J. De Ridder,Ludovic Delchambre,A. Dell'Oro,C. Ducourant,J. Fernández-Hernández,Morgan Fouesneau,Yves Fremat,Laurent Galluccio,Miguel García-Torres,J. González-Núñez,J. J. González-Vidal,Eric Gosset,Leanne P. Guy,J.-L. Halbwachs,Nigel Hambly,D. L. Harrison,Jose M Hernandez,Daniel Hestroffer,S. T. Hodgkin,A. Hutton,G. Jasniewicz,A. Jean-Antoine-Piccolo,Stefan Jordan,Andreas Korn,Alberto Krone-Martins,A. C. Lanzafame,T. Lebzelter,W. Löffler,Minia Manteiga,P. M. Marrese,J. M. Martín-Fleitas,André Moitinho,A. Mora,Karri Muinonen,J. Osinde,E. Pancino,T. Pauwels,J.-M. Petit,Alejandra Recio-Blanco,P. J. Richards,L. Rimoldini,Annie C. Robin,L. M. Sarro,Christos Siopis,M. J. S. Smith,Alessandro Sozzetti,Maria Süveges,J. Torra,W. van Reeven,U. Abbas,A. Abreu Aramburu,S. Accart,Conny Aerts,G. Altavilla,M. A. Álvarez,R. Alvarez,João Alves,Richard I. Anderson,Alexandre Humberto Andrei,E. Anglada Varela,E. Antiche,Teresa Antoja,Bernardino Arcay,Tri L. Astraatmadja,N. Bach,S. G. Baker,L. Balaguer-Núñez,P. Balm,C. Barache,C. Barata,D. Barbato,F. Barblan,Paul S. Barklem,David Barrado,M. Barros,M. A. Barstow,S. Bartholomé Muñoz,J.-L. Bassilana,Ugo Becciani,M. Bellazzini,A. Berihuete,Stefano Bertone,Luciana Bianchi,O. Bienaymé,S. Blanco-Cuaresma,T. Boch,C. Boeche,Alex Bombrun,R. Borrachero,Diego Bossini,S. Bouquillon,G. Bourda,Angela Bragaglia,L. Bramante,Maarten A. Breddels,Alessandro Bressan,N. Brouillet,T. Brüsemeister,E. Brugaletta,B. Bucciarelli,A. Burlacu,D. Busonero,A. G. Butkevich,R. Buzzi,Elisabetta Caffau,R. Cancelliere,G. Cannizzaro,Tristan Cantat-Gaudin,R. Carballo,T. Carlucci,J. M. Carrasco,Laia Casamiquela,Marco Castellani,Alfred Castro-Ginard,P. Charlot,L. Chemin,Andrea Chiavassa,G. Cocozza,G. Costigan,S. Cowell,F. Crifo,M. Crosta,C. Crowley,J. Cuypers,Carlos Dafonte,Yassine Damerdji,A. Dapergolas,P. David,M. David,P. de Laverny,F. De Luise,R. De March,D. de Martino,R. S. de Souza,A. de Torres,J. Debosscher,E. del Pozo,Marco Delbo,A. Delgado,H. E. Delgado,P. Di Matteo,S. Diakite,C. Diener,E. Distefano,C. 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The Two Micron All Sky Survey (2MASS)
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