Atmospheric Characterization of the Hot Super-Neptune WASP-166b with JWST
The detection and quantification of molecular species in the atmosphere of the hot super-Neptune WASP-166b using JWST transmission spectroscopy and free- and equilibrium-chemistry retrievals. Covers the first CO2 detection alongside confirmed H2O, the inferred superstellar metallicity and stellar-consistent carbon-to-oxygen ratio, and how these constrain the planet's formation pathway and its place near the Hot Neptune Desert.
2501.00609
This JWST study characterizes the atmosphere of WASP-166b, a hot super-Neptune (about 6.9 Earth radii, 32 Earth masses, roughly 1270 K) transiting an F-type star, using transmission spectroscopy acro…