Coupling magma-ocean and atmospheres in spectral retrievals of sub-Neptunes

arXiv:2605.08752 · astro-ph.EP · Submitted 2026-05-09 · Read on arXiv

Yuichi Ito, Quentin Changeat

astro-ph.EP

Submitted: 2026-05-09

Comments: 22 pages, 9 figures, accepted in ApJ

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Core — 29× in this paper · explained in 2 episodes
• Abundance — 27× in this paper · explained in 1 episode
• Accuracy — 3× in this paper · explained in 1 episode
• Benchmark — 3× in this paper · explained in 2 episodes
• Calibration — 3× in this paper · explained in 7 episodes
• Consistency — 3× in this paper · explained in 3 episodes
• Adam — 2× in this paper · explained in 2 episodes
• Hybrid Approach — 2× in this paper · explained in 4 episodes
• Transmission spectroscopy — 2× in this paper · explained in 2 episodes
• Bayesian Optimization — 1× in this paper · explained in 3 episodes
• National Institutes of Natural Sciences — 1× in this paper
• Trace — 1× in this paper · explained in 2 episodes

Sources

• JWST Reveals CH$_4$, CO$_2$, and H$_2$O in a Metal-rich Miscible Atmosphere on a Two-Earth-Radius Exoplanet
• TOI-421 b: A Hot Sub-Neptune with a Haze-Free, Low Mean Molecular Weight Atmosphere
• JWST COMPASS: Insights into the Systematic Noise Properties of NIRSpec/G395H From a Uniform Reanalysis of Seven Transmission Spectra
• A water-rich interior in the temperate sub-Neptune K2-18 b revealed by JWST
• Hydrocarbon Hazes on Temperate sub-Neptune K2-18b supported by data from the James Webb Space Telescope
• Magma ocean interactions can explain JWST observations of the sub-Neptune TOI-270 d
• Role of magma oceans in controlling carbon and oxygen of sub-Neptune atmospheres

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