Gas-depleted planet formation occurred in the four-planet system around the red dwarf LHS 1903
Artikel i vetenskaplig tidskrift, 2026
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.
Författare
T.G. Wilson
University of St Andrews
Anna M. Simpson
University of Michigan
A. Collier Cameron
University of St Andrews
R. Cloutier
McMaster University
V. Adibekyan
Universidade do Porto
A. Anna John
University of St Andrews
Y. Alibert
Universität Bern
M. Stalport
Universite de Liège
J. A. Egger
Universität Bern
A. Bonfanti
Institut fur Weltraumforschung
N. Billot
Université de Genève
P. Guterman
Laboratoire d'Astrophysique de Marseille
P. Maxted
Keele University
A.E. Simon
Universität Bern
S.G. Sousa
Universidade do Porto
Malcolm Fridlund
Universiteit Leiden
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
Mathias Beck
Université de Genève
A. Bekkelien
Université de Genève
S. Salmon
Université de Genève
V. Van Grootel
Universite de Liège
L. Fossati
Institut fur Weltraumforschung
A. J. Mustill
Lunds universitet
H. P. Osborn
Universität Bern
Tiziano Zingales
Università di Padova
M.J. Hooton
University of Cambridge
Laura Affer
Istituto nazionale di astrofisica (INAF)
S. Aigrain
University of Oxford
R. Alonso
Instituto de Astrofísica de Canarias
G. Anglada
Consejo Nacional de Investigaciones Cientificas y Tecnicas
A. Antoniadis-Karnavas
Universidade do Porto
T. Bárczy
Admatis
D. Barrado Navascues
Instituto Nacional de Tecnica Aeroespacial
S.C.C. Barros
Universidade do Porto
W. Baumjohann
Institut fur Weltraumforschung
T. Beck
Universität Bern
W. Benz
Universität Bern
F. Biondi
Istituto nazionale di astrofisica (INAF)
X. Bonfils
Université Grenoble Alpes
L. Borsato
Istituto nazionale di astrofisica (INAF)
A. Brandeker
Stockholms universitet
C. Broeg
Universität Bern
L. A. Buchhave
Danmarks Tekniske Universitet (DTU)
M. Buder
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
J. Cabrera
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
Sebastian Carrazco Gaxiola
Universidad Nacional Autónoma de México
D. Charbonneau
Harvard-Smithsonian Center for Astrophysics
S. Charnoz
Institut de Physique du Globe de Paris
D. R. Ciardi
National Aeronautics and Space Administration (NASA)
Karen A. Collins
Harvard-Smithsonian Center for Astrophysics
Kevin I. Collins
George Mason University
R. Cosentino
Istituto nazionale di astrofisica (INAF)
Szilard Csizmadia
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
P. E. Cubillos
Institut fur Weltraumforschung
S. Dalal
University of Exeter
Mario Damasso
Istituto nazionale di astrofisica (INAF)
James R.A. Davenport
University of Washington
Melvyn B. Davies
Lunds universitet
M. Deleuil
Laboratoire d'Astrophysique de Marseille
L. Delrez
Universite de Liège
O. Demangeon
Universidade do Porto
B.O. Demory
Universität Bern
Victoria DiTomasso
Harvard-Smithsonian Center for Astrophysics
D. Dragomir
University of New Mexico
Courtney D. Dressing
University of California
X. Dumusque
Université de Genève
D. Ehrenreich
Université de Genève
Anders Erikson
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
E. Esparza-Borges
Instituto de Astrofísica de Canarias
A. Fortier
Universität Bern
Izuru Fukuda
University of Tokyo
A. Fukui
Instituto de Astrofísica de Canarias
D. Gandolfi
Universita degli Studi di Torino
Adriano Ghedina
Istituto nazionale di astrofisica (INAF)
S. Giacalone
University of California
H. Gill
University of California
Michaël Gillon
Universite de Liège
Yilen Gómez Maqueo Chew
Universidad Nacional Autónoma de México
M. Gudel
Universität Wien
P. Guerra
Observatori Astronòmic Albanya
Maximilian N. Günther
Europeiska rymdorganisationen (ESA)
N.C. Hara
Université de Genève
Avet Harutyunyan
Istituto nazionale di astrofisica (INAF)
Y. Hayashi
University of Tokyo
R. D. Haywood
University of Exeter
Rae Holcomb
University of California
Keith Horne
University of St Andrews
S. Hoyer
Laboratoire d'Astrophysique de Marseille
Chelsea X. Huang
University of Southern Queensland
Masahiro Ikoma
National Astronomical Observatory of Japan
K. Isaak
Europeiska rymdorganisationen (ESA)
James A.G. Jackman
Arizona State University
Jon M. Jenkins
National Aeronautics and Space Administration (NASA)
Eric L.N. Jensen
Swarthmore College
Daniel Jontof-Hutter
University of the Pacific
Yugo Kawai
Université de Genève
L. L. Kiss
Magyar Tudomanyos Akademia
B. S. Lakeland
University of Exeter
J. Laskar
Observatoire de Paris
D. W. Latham
Harvard-Smithsonian Center for Astrophysics
A. L. des Etangs
Institut d 'Astrophysique de Paris
A. Leleu
Universität Bern
M. Lendl
Université de Genève
Jerome P. De Leon
University of Tokyo
F. Lienhard
University of Cambridge
Mercedes López-Morales
Harvard-Smithsonian Center for Astrophysics
C. Lovis
Université de Genève
M. B. Lund
National Aeronautics and Space Administration (NASA)
R. Luque
University of Chicago
D. Magrin
Istituto nazionale di astrofisica (INAF)
L. Malavolta
Università di Padova
Aldo F. Martínez Fiorenzano
Istituto nazionale di astrofisica (INAF)
Andrew W. Mayo
University of California
Michel Mayor
Université de Genève
C. Mordasini
Universität Bern
A. Mortier
University of Birmingham
F. Murgas
Instituto de Astrofísica de Canarias
Norio Narita
Instituto de Astrofísica de Canarias
Valerio Nascimbeni
Istituto nazionale di astrofisica (INAF)
Belinda A. Nicholson
University of Oxford
G. Olofsson
Stockholms universitet
R. Ottensamer
Universität Wien
I. Pagano
Istituto nazionale di astrofisica (INAF)
L. Palethorpe
University of Edinburgh
Enric Palle
Instituto de Astrofísica de Canarias
H. Parviainen
Instituto de Astrofísica de Canarias
Marco Pedani
Istituto nazionale di astrofisica (INAF)
Francesco Pepe
Université de Genève
G. Peter
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
M. Pinamonti
Istituto nazionale di astrofisica (INAF)
Giampaolo P. Piotto
Università di Padova
Don L. Pollacco
The University of Warwick
E. Poretti
Istituto nazionale di astrofisica (INAF)
D. Queloz
University of Cambridge
Samuel N. Quinn
Harvard-Smithsonian Center for Astrophysics
Roberto Ragazzoni
Università di Padova
N. Rando
Europeiska rymdorganisationen (ESA)
D. Rapetti
National Aeronautics and Space Administration (NASA)
F. Ratti
Europeiska rymdorganisationen (ESA)
H. Rauer
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
F. Rescigno
University of Exeter
I. Ribas
Consejo Nacional de Investigaciones Cientificas y Tecnicas
K. Rice
University of Edinburgh
George R. Ricker
Massachusetts Institute of Technology (MIT)
Paul Robertson
University of California
Thierry de Roche
Universität Bern
L. Sabin
Universidad Nacional Autónoma de México
N. C. Santos
Universidade do Porto
Dimitar D. Sasselov
Harvard-Smithsonian Center for Astrophysics
A. B. Savel
University of Maryland
Gaetano Scandariato
Istituto nazionale di astrofisica (INAF)
N. Schanche
University of Maryland
U. Schroffenegger
Universität Bern
R. Schwarz
Harvard-Smithsonian Center for Astrophysics
S. Seager
Massachusetts Institute of Technology (MIT)
Ramotholo Sefako
South African Astronomical Observatory
D. Segransan
Université de Genève
Avi Shporer
Massachusetts Institute of Technology (MIT)
André M. Silva
Universidade do Porto
A. M.S. Smith
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
A. Sozzetti
Istituto nazionale di astrofisica (INAF)
Manfred B. Steller
Institut fur Weltraumforschung
G.M. Szabó
Eötvös Loránd University (ELTE)
Motohide Tamura
University of Southern Queensland
Nicolas Thomas
Universität Bern
A. Tuson
University of Cambridge
S. Udry
Université de Genève
A. Vanderburg
Massachusetts Institute of Technology (MIT)
Roland K. Vanderspek
Massachusetts Institute of Technology (MIT)
J. Venturini
Université de Genève
F. Verrecchia
ASI Science Data Center (ASDC)
N. A. Walton
University of Cambridge
Christopher Watson
Queen's University Belfast
R. Wells
Universität Bern
J. N. Winn
Princeton University
Roberto Zambelli
Societá Astronomica Lunae
C. Ziegler
Stephen F. Austin State University
Science
00368075 (ISSN) 10959203 (eISSN)
Vol. 392 6795 eadl2348-Ämneskategorier (SSIF 2025)
Astronomi, astrofysik och kosmologi
DOI
10.1126/science.adl2348
PubMed
41678587