Native-resolution retrievals on 0.97-5.27 micron JWST spectra of VHS 1256 b find a ~79% cloud deck, solar-like metallicity and C/O, and depleted 18O in a partially cloudy disequilibrium atmosphere.
The Deuterium-Burning Mass Limit for Brown Dwarfs and Giant Planets
4 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
There is no universally acknowledged criterion to distinguish brown dwarfs from planets. Numerous studies have used or suggested a definition based on an object's mass, taking the ~13-Jupiter mass (M_J) limit for the ignition of deuterium. Here, we investigate various deuterium-burning masses for a range of models. We find that, while 13 M_J is generally a reasonable rule of thumb, the deuterium fusion mass depends on the helium abundance, the initial deuterium abundance, the metallicity of the model, and on what fraction of an object's initial deuterium abundance must combust in order for the object to qualify as having burned deuterium. Even though, for most proto-brown dwarf conditions, 50% of the initial deuterium will burn if the object's mass is ~(13.0 +/- 0.8)M_J, the full range of possibilities is significantly broader. For models ranging from zero-metallicity to more than three times solar metallicity, the deuterium burning mass ranges from ~11.0 M_J (for 3-times solar metallicity, 10% of initial deuterium burned) to ~16.3 M_J (for zero metallicity, 90% of initial deuterium burned).
years
2026 4representative citing papers
NGTS-39 b is a 1.467 MJ, 1.088 RJ transiting warm Jupiter on a 58.2-day eccentric orbit around an F9 dwarf, identified via TESS, NGTS, CORALIE and HARPS data.
Discovery of an L2 brown dwarf companion (mass 53 M_Jup, age ~280 Myr) to HIP 17453 A via proper-motion confirmed imaging and spectroscopy.
citing papers explorer
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Native-resolution retrievals of VHS 1256-1257 b spanning the JWST/NIRSpec wavelength range: Chemical composition of a partially cloudy atmosphere
Native-resolution retrievals on 0.97-5.27 micron JWST spectra of VHS 1256 b find a ~79% cloud deck, solar-like metallicity and C/O, and depleted 18O in a partially cloudy disequilibrium atmosphere.
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NGTS-39 b: A 58 d transiting warm Jupiter in an eccentric orbit
NGTS-39 b is a 1.467 MJ, 1.088 RJ transiting warm Jupiter on a 58.2-day eccentric orbit around an F9 dwarf, identified via TESS, NGTS, CORALIE and HARPS data.
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The Companions to B and A Stars Snapshot (C-BASS) Survey: I. Discovery of a Young Brown Dwarf Companion to HIP 17453
Discovery of an L2 brown dwarf companion (mass 53 M_Jup, age ~280 Myr) to HIP 17453 A via proper-motion confirmed imaging and spectroscopy.
- Understanding eccentric temperate giants: an in-depth study of the architecture and stellar obliquity of the TOI-2134 system