JWST color sequence of transiting exoplanets and directly imaged substellar objects

arXiv:2608.25993 · astro-ph.EP, astro-ph.SR · Submitted 2026-08-26 · Read on arXiv

astro-ph.EP, astro-ph.SR

Submitted: 2026-08-26

Updated: 2026-08-26

Comments: Accepted for publication in AJ. Code and data to reproduce all figures: https://doi.org/10.5281/zenodo.22101390 . Interactive spectra and color-magnitude browser: https://spectra.guangweifu.com

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

Terminology

• Metallicity — 28× in this paper · explained in 3 episodes
• Abundance — 7× in this paper · explained in 1 episode
• Trace — 7× in this paper · explained in 2 episodes
• Aperture — 5× in this paper · explained in 1 episode
• Degeneracy — 3× in this paper · explained in 3 episodes
• Calibration — 2× in this paper · explained in 7 episodes
• Core — 2× in this paper · explained in 2 episodes
• Benchmark — 1× in this paper · explained in 2 episodes
• Clustering — 1× in this paper · explained in 2 episodes
• Diagnostic Tools — 1× in this paper · explained in 2 episodes
• Fidelity — 1× in this paper · explained in 2 episodes
• James Webb Space Telescope — 1× in this paper
• Mikulski Archive for Space Telescopes — 1× in this paper
• Robustness — 1× in this paper · explained in 5 episodes
• alpha — 1× in this paper · explained in 1 episode

Sources

• Confirmation of sub-solar metallicity for WASP-77Ab from JWST thermal emission spectroscopy
• JWST Reveals CH$_4$, CO$_2$, and H$_2$O in a Metal-rich Miscible Atmosphere on a Two-Earth-Radius Exoplanet
• Asymmetric nightside CO2 features, inefficient heat transport, and precise evolutionary constraints: Spectroscopic phase curves reveal the past and present of a white dwarf-brown dwarf binary
• Native-resolution retrievals of VHS 1256-1257 b spanning the JWST/NIRSpec wavelength range: Chemical composition of a partially cloudy atmosphere
• A SPHEREx Pipeline and Spectral Library for Ultracool Dwarfs
• Formation of Giant Planets
• JWST-TST DREAMS: The Nightside Emission and Chemistry of WASP-17b
• Dayside Clouds and an Elevated C/O Ratio in the Atmosphere of the Ultra-hot Jupiter WASP-19b
• A Precise Metallicity and Carbon-to-Oxygen Ratio for a Warm Giant Exoplanet from its Panchromatic JWST Emission Spectrum
• Retrievals on NIRCam transmission and emission spectra of HD 189733b with PLATON 6, a GPU code for the JWST era

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