Bibcode
Wilson, Thomas G.; Simpson, Anna M.; Collier Cameron, Andrew; Cloutier, Ryan; Adibekyan, Vardan; John, Ancy Anna; Alibert, Yann; Stalport, Manu; Egger, Jo Ann; Bonfanti, Andrea; Billot, Nicolas; Guterman, Pascal; Maxted, Pierre F. L.; Simon, Attila E.; Sousa, Sérgio G.; Fridlund, Malcolm; Beck, Mathias; Bekkelien, Anja; Salmon, Sébastien; Van Grootel, Valérie; Fossati, Luca; Mustill, Alexander James; Osborn, Hugh P.; Zingales, Tiziano; Hooton, Matthew J.; Affer, Laura; Aigrain, Suzanne; Alonso, Roi; Anglada, Guillem; Antoniadis-Karnavas, Alexandros; Bárczy, Tamas; Barrado Navascues, David; Barros, Susana C. C.; Baumjohann, Wolfgang; Beck, Thomas; Benz, Willy; Biondi, Federico; Bonfils, Xavier; Borsato, Luca; Brandeker, Alexis; Broeg, Christopher; Buchhave, Lars A.; Buder, Maximilian; Cabrera, Juan; Carrazco Gaxiola, Sebastian; Charbonneau, David; Charnoz, Sébastien; Ciardi, David R.; Collins, Karen A.; Collins, Kevin I.; Cosentino, Rosario; Csizmadia, Szilard; Cubillos, Patricio E.; Dalal, Shweta; Damasso, Mario; Davenport, James R. A.; Davies, Melvyn B.; Deleuil, Magali; Delrez, Laetitia; Demangeon, Olivier D. S.; Demory, Brice-Olivier; DiTomasso, Victoria; Dragomir, Diana; Dressing, Courtney D.; Dumusque, Xavier; Ehrenreich, David; Erikson, Anders; Esparza-Borges, Emma; Fortier, Andrea; Fukuda, Izuru; Fukui, Akihiko; Gandolfi, Davide; Ghedina, Adriano; Giacalone, Steven; Gill, Holden; Gillon, Michaël; Gómez Maqueo Chew, Yilen; Güdel, Manuel; Guerra, Pere; Günther, Maximilian N.; Hara, Nathan; Harutyunyan, Avet; Hayashi, Yuya; Haywood, Raphaëlle D.; Holcomb, Rae; Horne, Keith; Hoyer, Sergio; Huang, Chelsea X.; Ikoma, Masahiro; Isaak, Kate G.; Jackman, James A. G.; Jenkins, Jon M.; Jensen, Eric L. N.; Jontof-Hutter, Daniel; Kawai, Yugo; Kiss, Laszlo L.; Lakeland, Ben S.; Laskar, Jacques; Latham, David W.; Lecavelier des Etangs, Alain et al.
Referencia bibliográfica
Science
Fecha de publicación:
4
2026
Revista
Número de citas
0
Número de citas referidas
0
Descripción
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.