JWST detected phosphine in the atmosphere of cool brown dwarf Wolf 1130 C

9. 10. 2025

JWST detected phosphine in the atmosphere of cool brown dwarf Wolf 1130 C

Star system: Wolf 1130 A | Distance from the Sun: 54.1 light years

The phosphine is detected in far higher quantities than in other brown dwarfs. The result matches disequilibrium chemistry seen in Jupiter and Saturn. The brown dwarf orbits white dwarf - red dwarf binary.

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Observation of undepleted phosphine in the atmosphere of a low-temperature brown dwarf external link

Stars mentioned

Wolf 1130 A

M3, Red dwarf

mass: 0.26 M☉

radius: 0.3 R☉

distance: 54.1 ly

stars in the system: 3

exoplanets: 0

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