Bibcode
Martín, E. L.; Žerjal, M.; Bouy, H.; Martin-Gonzalez, D.; Muñoz Torres, S.; Barrado, D.; Olivares, J.; Pérez-Garrido, A.; Mas-Buitrago, P.; Cruz, P.; Solano, E.; Zapatero Osorio, M. R.; Lodieu, N.; Béjar, V. J. S.; Zhang, J. -Y.; del Burgo, C.; Huélamo, N.; Laureijs, R.; Mora, A.; Saifollahi, T.; Cuillandre, J. -C.; Schirmer, M.; Tata, R.; Points, S.; Phan-Bao, N.; Goldman, B.; Casewell, S. L.; Reylé, C.; Smart, R. L.; Dominguez-Tagle, C.; Escobar, A.; Sedighi, N.; Tsilia, S.; Vitas, N.; Ayadi, A.; Aghanim, N.; Altieri, B.; Andreon, S.; Auricchio, N.; Baldi, M.; Balestra, A.; Bardelli, S.; Basset, A.; Bender, R.; Bonino, D.; Branchini, E.; Brescia, M.; Brinchmann, J.; Camera, S.; Capobianco, V.; Carbone, C.; Carretero, J.; Casas, S.; Castellano, M.; Cavuoti, S.; Cimatti, A.; Congedo, G.; Conselice, C. J.; Conversi, L.; Copin, Y.; Corcione, L.; Courbin, F.; Courtois, H. M.; Cropper, M.; Da Silva, A.; Degaudenzi, H.; Di Giorgio, A. M.; Dinis, J.; Dubath, F.; Dupac, X.; Dusini, S.; Ealet, A.; Farina, M.; Farrens, S.; Ferriol, S.; Fosalba, P.; Frailis, M.; Franceschi, E.; Fumana, M.; Galeotta, S.; Garilli, B.; Gillard, W.; Gillis, B.; Giocoli, C.; Gómez-Alvarez, P.; Grazian, A.; Grupp, F.; Guzzo, L.; Haugan, S. V. H.; Hoar, J.; Hoekstra, H.; Holmes, W.; Hook, I.; Hormuth, F.; Hornstrup, A.; Hu, D.; Hudelot, P.; Jahnke, K.; Jhabvala, M.; Keihänen, E. et al.
Bibliographical reference
Astronomy and Astrophysics
Advertised on:
5
2025
Journal
Citations
21
Refereed citations
17
Description
We provide an early assessment of the imaging capabilities of the Euclid space mission to deeply probe nearby star-forming regions and associated very young open clusters, and in particular, to determine to which extent it can shed light into the newborn free- floating planet population. This paper focusses on a low-reddening region observed in just one Euclid pointing. The dust and gas has been cleared out from the region by the hot σ Orionis star. One late-M and six known spectroscopically confirmed L-type ultracool members in the σ Orionis cluster were used as benchmarks to provide a high-purity procedure to select new candidate members with Euclid. The exquisite angular resolution and depth delivered by the Euclid instruments allowed us to focus on bona fide point sources. A cleaned sample of σ Orionis cluster substellar members was produced, and the initial mass function (IMF) was estimated by combining Euclid and Gaia data. Our σ Orionis substellar IMF is consistent with a power-law distribution without a significant steepening at the planetary-mass end. No evidence of a low-mass cutoff is found down to the detection limit of this study at 4 Jupiter masses in the very young σ Orionis open cluster. ★This paper is published on behalf of the Euclid Consortium.
Related projects
Very Low Mass Stars, Brown Dwarfs and Planets
Our goal is to study the processes that lead to the formation of low mass stars, brown dwarfs and planets and to characterize the physical properties of these objects in various evolutionary stages. Low mass stars and brown dwarfs are likely the most numerous type of objects in our Galaxy but due to their low intrinsic luminosity they are not so
Rafael
Rebolo López
Exoplanets and Astrobiology
The search for life in the universe has been driven by recent discoveries of planets around other stars (known as exoplanets), becoming one of the most active fields in modern astrophysics. The growing number of new exoplanets discovered in recent years and the recent advance on the study of their atmospheres are not only providing new valuable
Enric
Pallé Bago
Chemical Abundances in Stars
Stellar spectroscopy allows us to determine the properties and chemical compositions of stars. From this information for stars of different ages in the Milky Way, it is possible to reconstruct the chemical evolution of the Galaxy, as well as the origin of the elements heavier than boron, created mainly in stellar interiors. It is also possible to
Carlos
Allende Prieto