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Euclid: Early Release Observations. A glance at free-floating newborn planets in the sigma Orionis cluster

E. Mart'in M. vZerjal H. Bouy D. Martín-González S. Torres +495 lainnya
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We provide an early assessment of the imaging capabilities of the 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 pointing. The dust and gas has been cleared out from the region by the hot sigma \,Orionis star. One late-M and six known spectroscopically confirmed L-type ultracool members in the sigma \,Orionis cluster were used as benchmarks to provide a high-purity procedure to select new candidate members with The exquisite angular resolution and depth delivered by the instruments allowed us to focus on bona fide point sources. A cleaned sample of sigma \,Orionis cluster substellar members was produced, and the initial mass function (IMF) was estimated by combining and Gaia data. Our sigma \,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 sigma \,Orionis open cluster.

Topik & Kata Kunci

Physics

Penulis (500)

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E. Mart'in

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M. vZerjal

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D. Martín-González

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Departament de F'isica

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Format Sitasi

APA MLA BibTeX
Mart'in, E., vZerjal, M., Bouy, H., Martín-González, D., Torres, S., Barrado, D. et al. (2024). Euclid: Early Release Observations. A glance at free-floating newborn planets in the sigma Orionis cluster. https://doi.org/10.1051/0004-6361/202450793

Akses Cepat

Lihat di Sumber doi.org/10.1051/0004-6361/202450793
Informasi Jurnal
Tahun Terbit
2024
Bahasa
en
Total Sitasi
5×
Sumber Database
Semantic Scholar
DOI
10.1051/0004-6361/202450793
Akses
Open Access ✓