The JWST/NIRISS Deep Spectroscopic Survey for Young Brown Dwarfs and Free-floating Planets Article Swipe
Adam B. Langeveld
,
A. Scholz
,
K. Mužić
,
Ray Jayawardhana
,
D. Capela
,
Loïc Albert
,
René Doyon
,
Laura Flagg
,
Matthew De Furio
,
Doug Johnstone
,
David Lafrenière
,
Michael R. Meyer
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.3847/1538-3881/ad6f0c
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.3847/1538-3881/ad6f0c
The discovery and characterization of free-floating planetary-mass objects (FFPMOs) is fundamental to our understanding of star and planet formation. Here we report results from an extremely deep spectroscopic survey of the young star cluster NGC1333 using Near-InfraRed Imager and Slitless Spectrograph (NIRISS) wide field slitless spectroscopy on the James Webb Space Telescope. The survey is photometrically complete to K ∼ 21, and includes useful spectra for objects as faint as K ∼ 20.5. The observations cover 19 known brown dwarfs, for most of which we confirm spectral types using NIRISS spectra. We discover six new candidates with L-dwarf spectral types that are plausible planetary-mass members of NGC1333, with estimated masses between 5 and 15 M Jup . One, at ∼5 M Jup , shows clear infrared excess emission and is a good candidate to be the lowest-mass object known to have a disk. We do not find any objects later than mid-L spectral type ( M ≲ 4 M Jup ). The paucity of Jupiter-mass objects, despite the survey’s unprecedented sensitivity, suggests that our observations reach the lowest-mass objects that formed like stars in NGC1333. Our findings put the fraction of FFPMOs in NGC1333 at ∼10% of the number of cluster members, significantly more than expected from the typical log-normal stellar mass function. We also search for wide binaries in our images and report a young brown dwarf with a planetary-mass companion.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3847/1538-3881/ad6f0c
- OA Status
- gold
- Cited By
- 15
- References
- 84
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4402703609
All OpenAlex metadata
Raw OpenAlex JSON
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https://openalex.org/W4402703609Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3847/1538-3881/ad6f0cDigital Object Identifier
- Title
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The JWST/NIRISS Deep Spectroscopic Survey for Young Brown Dwarfs and Free-floating PlanetsWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2024Year of publication
- Publication date
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2024-09-27Full publication date if available
- Authors
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Adam B. Langeveld, A. Scholz, K. Mužić, Ray Jayawardhana, D. Capela, Loïc Albert, René Doyon, Laura Flagg, Matthew De Furio, Doug Johnstone, David Lafrenière, Michael R. MeyerList of authors in order
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https://doi.org/10.3847/1538-3881/ad6f0cPublisher landing page
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
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https://doi.org/10.3847/1538-3881/ad6f0cDirect OA link when available
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Brown dwarf, Planet, Physics, James Webb Space Telescope, Astrophysics, Planetary mass, Astronomy, Low Mass, Stars, Dwarf planet, Stellar classification, Minimum mass, Exoplanet, Circumbinary planet, Jupiter (rocket family), Telescope, SpacecraftTop concepts (fields/topics) attached by OpenAlex
- Cited by
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15Total citation count in OpenAlex
- Citations by year (recent)
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2025: 12, 2024: 3Per-year citation counts (last 5 years)
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84Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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