Accès ouvert déclaré 2026 article

Gas-depleted planet formation occurred in the four-planet system around the red dwarf LHS 1903

T. G. Wilson, Anna M. Simpson, Andrew Collier Cameron, Ryan Nelson Cloutier, V. Adibekyan, A. A. John, Yann Alibert, Manu Stalport, Jo Ann Egger, A. Bonfanti, Nicolas Billot, P. Guterman, Pierre Maxted, Attila E. Simon, Sérgio G. Sousa, M. Fridlund, Mathias Beck, Anja Bekkelien, Sébastien Salmon, V. Van Grootel, Luca Fossati, Alexander J. Mustill, H. P. Osborn, T. Zingales, M. J. Hooton, L. Affer, S. Aigrain, Roi Alonso, Guillem Anglada, A. Antoniadis-Karnavas, T. Bárczy, David Barrado Navascues, S. C. C. Barros, Wolfgang Baumjohann, Thomas D. Beck, Willy Benz, F. Biondi, Xavier Bonfils, Luca Borsato, Alexis Brandeker, C. Broeg, A. Lars Buchhave, Maximilian Buder, Juan Cabrera, S Carrazco Gaxiola, David Charbonneau, S. Charnoz, David R. Ciardi, Karen A. Collins, Kevin I. Collins, Rosario Cosentino, S. Csizmadia, Patricio E. Cubillos, Shweta Dalal, M. Damasso, James R. A. Davenport, Melvyn Davies, Magali Deleuil, Laetitia Delrez, Olivier D. S. Demangeon, Brice-Olivier Demory, Victoria DiTomasso, Diana Dragomir, Courtney D. Dressing, X. Dumusque, D. Ehrenreich, Anders Erikson, E. Esparza-Borges, A. Fortier, Izuru Fukuda, A. Fukui, D. Gandolfi, A. Ghedina, Steven Giacalone, Holden Gill, Michaël Gillon, Y. Gómez Maqueo Chew, Manuel Güdel, Pere Guerra, M. N. Günther, N. Hara, A. Harutyunyan, Y Hayashi, R D Haywood, Rae Holcomb, K. Horne, Sergio Hoyer, Chelsea X. Huang, Masahiro Ikoma, Kate G. Isaak, James A. G. Jackman, Jon M. Jenkins, Eric L. N. Jensen, Daniel Jontof‐Hutter, Yugo Kawai, L. L. Kiss, Ben S Lakeland, J. Laskar, David W. Latham, Alain Lecavelier des Etangs, Adrien Leleu, Monika Lendl, Jerome de Leon, Florian Lienhard, Mercedes López‐Morales, Christoph Lovis, M B Lund, R. Luque, D. Magrin, Luca Malavolta, Aldo F Martinez Fiorenzano, Andrew W. Mayo, Michel Mayor, Christoph Mordasini, Annelies Mortier, F. Murgas, Norio Narita, V. Nascimbeni, B. Nicholson, Göran Olofsson, R. Ottensamer, Isabella Pagano, Larissa Palethorpe, Enric Pallé, Hannu Parviainen, Marco Pedani, Francesco A. Pepe, Gisbert Peter, M. Pinamonti, G. Piotto, Don Pollacco, Ennio Poretti, D. Queloz, S. Aidan Quinn, Roberto Ragazzoni, Nicola Rando, David Rapetti, F. Ratti, Heike Rauer, Federica Rescigno, Ignasi Ribas, K. Rice, G. Ricker, Paul Robertson, Thierry De Roche, L. Sabin, Nuno C. Santos, D. D. Sasselov, Arjun B Savel, G. Scandariato, N. Schanche, U. Schroffenegger, Richard P. Schwarz, Sara Seager, Ramotholo Sefako, Damien Ségransan, A. Shporer, A. M. Silva, Alexis M S Smith, Alessandro Sozzetti, Manfred Steller, Gyula M. Szabó, Motohide Tamura, N. Thomas, A. Tuson, S. Udry, A. Vanderburg, Roland K. Vanderspek, J. Venturini, F. Verrecchia, Nicholas A. Walton, Christopher Watson, Robert D. Wells, Joshua N. Winn, Roberto Zambelli, Carl Ziegler

1Citations signalées, ce qui n’est pas une note de qualité

94Institutions déclarées

19Pays d’affiliation déclarés

Rattachement africain : gb, us, ca, pt, ch, be, at, fr, nl, se, it, es, hu, de, dk, mx, jp, au, Afrique du Sud. Niveau de preuve : code pays fourni par la source.

Le résumé fourni par la source

The radii of small exoplanets form two populations, super-Earths and sub-Neptunes, separated by a gap known as the radius valley. This feature could be produced by the removal of atmospheres by stellar or internal heating or by the lack of an initial envelope. We used transit photometry and radial velocity measurements to detect and characterize four exoplanets orbiting LHS 1903, a red dwarf star in the Milky Way's thick disk. These four planets have orbital periods ranging from 2.2 to 29.3 days and span the radius valley within a single planetary system. The derived densities indicate that LHS 1903 b is rocky, whereas LHS 1903 c and LHS 1903 d have extended atmospheres. The most distant planet from the host star, LHS 1903 e, has no gaseous envelope, indicating that it formed from gas-depleted material.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.

Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref: Gas-depleted planet formation occurred in the four-planet system around the red dwarf LHS 1903
Date Crossref: 16/04/2026
Éditeur: American Association for the Advancement of Science (AAAS)
Type: journal-article

Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.

Les institutions déclarées

University of St Andrews University of Warwick University of Michigan Center for Astrophysics Harvard & Smithsonian McMaster University Universidade do Porto Institute of Astrophysics and Space Sciences University of Bern University of Geneva University of Liège Austrian Academy of Sciences Space Research Institute Laboratoire d’Astrophysique de Marseille Institut National des Sciences de l'Univers Keele University Leiden University Leiden Observatory Chalmers University of Technology Lund University Massachusetts Institute of Technology University of Padua Istituto Nazionale di Fisica Nucleare, Galileo Galilei Institute for Theoretical Physics Osservatorio Astronomico di Padova National Institute for Astrophysics University of Cambridge Osservatorio Astronomico di Palermo University of Oxford Universidad de La Laguna Instituto de Astrofísica de Canarias Institut d'Estudis Espacials de Catalunya Institut de Ciència de Materials de Barcelona University of Miskolc Centro de Astrobiología Max Planck Institute for Extraterrestrial Physics Institut de Planétologie et d'Astrophysique de Grenoble Université Grenoble Alpes Stockholm University AlbaNova Technical University of Denmark Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)Georgia State University Star Center Universidad Nacional Autónoma de México Institut de physique du globe de Paris Université Paris Cité NASA Exoplanet Science Institute Infrared Processing and Analysis Center George Mason University Osservatorio Astrofisico di Catania Telescopio Nazionale Galileo Osservatorio Astrofisico di Torino University of Exeter University of Washington University of New Mexico University of California, Berkeley HES-SO Genève Tokyo University of the Arts The University of Tokyo University of Turin University of Vienna Universitat de Girona European Space Research and Technology Centre University of California, Irvine University of Southern Queensland National Astronomical Observatory of Japan Arizona State University Ames Research Center Swarthmore College University of the Pacific Eötvös Loránd University Konkoly Observatory HUN-REN Research Centre for Astronomy and Earth Sciences Institut de Mécanique Céleste et de Calcul des Éphémérides Institut d'Astrophysique de Paris University of Chicago University of Birmingham Astrobiology Center UK Astronomy Technology Centre University of Edinburgh Brera Astronomical Observatory Board of the Swiss Federal Institutes of Technology Universities Space Research Association Technische Universität Berlin Freie Universität Berlin University of Maryland, College Park Goddard Space Flight Center American Institute of Aeronautics and Astronautics South African Radio Astronomy Observatory ELTE Research Centre for Linguistics Astronomical Observatory of Rome Space (Italy)Queen's University Belfast Princeton University Stephen F. Austin State University

Une affiliation ne permet pas de déduire la nationalité d’un auteur.

Les sujets associés

Stellar, planetary, and galactic studiesAstronomy and Astrophysical ResearchAstrophysics and Star Formation Studies

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