A sulphur-bearing atmosphere is an exoplanet atmosphere dominated by heavy sulphur-containing molecules (e.g. SO₂, H₂S, sulphur allotrope vapors). Because these molecules are heavy compared to H₂/He, they raise the atmosphere’s mean molecular weight and can drive strong greenhouse warming.
Cases in this wiki
- l-98-59-d — 2026 Oxford-led study proposes a thick sulphur-bearing atmosphere as the engine driving a persistent magma ocean over Gyr timescales (src-l-98-59-d-sulphur-magma-world-2026-05).
- toi-1130b — JWST transmission spectroscopy detected SO₂ within a 5.5 amu high-μ atmosphere (src-jwst-toi-1130b-atmosphere-2026-05).