Strong and variable stratospheric CO emission from lava-planet 55 Cnc e observed with NIRCam/JWST

arXiv:2606.11866 · astro-ph.EP · Submitted 2026-06-10 · Read on arXiv

Ignas Snellen, Yamila Miguel, Leoni Janssen, Dario Gonzalez Picos, Sam de Regt, Natalie Grasser, Lars Klijn

astro-ph.EP

Submitted: 2026-06-10

Comments: Submitted to Nature Astronomy. 16 pages, 6 figures. Please no media coverage before publication

Code: https://github.com/pw31/GGchem

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

Terminology

• Abundance — 19× in this paper · explained in 1 episode
• Trace — 2× in this paper · explained in 2 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Principal Component Analysis (PCA) — 1× in this paper · explained in 4 episodes
• Reheating — 1× in this paper · explained in 2 episodes
• Transmission spectroscopy — 1× in this paper · explained in 2 episodes

Sources

• Magma Ocean Waves and Thermal Variability on Lava Worlds
• pyROX: Rapid Opacity X-sections

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