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Water and an escaping helium tail detected in the hazy and methane-depleted atmosphere of HAT-P-18b from JWST NIRISS/SOSS
Guangwei Fu, Néstor Espinoza, David K. Sing +11
JWST is here. The early release observation program (ERO) provides us with the first look at the scientific data and the spectral capabilities. One of the targets from ERO is HAT-P…
Observability of signatures of transport-induced chemistry in clear atmospheres of hot gas giant exoplanets
Maria Zamyatina, Éric Hébrard, Benjamin Drummond +6
Transport-induced quenching, i.e., the homogenisation of chemical abundances by atmospheric advection, is thought to occur in the atmospheres of hot gas giant exoplanets. While som…
Signatures of Strong Magnetization and Metal-Poor Atmosphere for a Neptune-Size Exoplanet
Lotfi Ben-Jaffel, Gilda E. Ballester, Antonio García Muñoz +10
The magnetosphere of an exoplanet has yet to be unambiguously detected. Investigations of star-planet interaction and neutral atomic hydrogen absorption during transit to detect ma…
UV Absorption by Silicate Cloud Precursors in Ultra-hot Jupiter WASP-178b
Joshua D. Lothringer, David K. Sing, Zafar Rustamkulov +6
Aerosols have been found to be nearly ubiquitous in substellar atmospheres. The precise temperature at which these aerosols begin to form in exoplanets has yet to be observationall…
Analysis of a JWST NIRSpec Lab Time Series: Characterizing Systematics, Recovering Exoplanet Transit Spectroscopy, and Constraining a Noise Floor
Zafar Rustamkulov, David Sing, Rongrong Liu +1
The James Webb Space Telescope's NIRSpec instrument will unveil the nature of exoplanet atmospheres across the wealth of planet types, from temperate terrestrial worlds to ultrahot…
A Comprehensive Analysis of WASP-17b's Transmission Spectrum from Space-Based Observations
L. Alderson, H. R. Wakeford, R. J. MacDonald +9
Due to its 1770 K equilibrium temperature, WASP-17b, a 1.99 , 0.486 exoplanet, sits at the critical juncture between hot and ultra-hot Jupiters. We…