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29 papers · 1 filter
Probing Exoplanetary Chemistry with Ariel: Scientific Priorities and Observational Strategies
Olivia Venot, Yamila Miguel, Robin Baeyens +30
Over the past two decades, increasingly precise observations have revealed that exoplanet atmospheres are chemically diverse and often far from equilibrium, with processes such as…
Measurements and predictions of H2 pressure-broadening coefficients of CO2 absorption lines for exoplanet atmosphere studies
Faten Hendaoui, Pascale Chelin, Xavier Landsheere +2
Accurate and comprehensive H2 pressure-induced broadening data for CO2 infrared lines over a wide temperature range are essential for modeling atmospheric opacity of exoplanets. Ho…
Cloud and Haze Parameterization in Atmospheric Retrievals: Insights from Titan's Cassini Data and JWST Observations of Hot Jupiters
Quentin Changeat, Deborah Bardet, Katy Chubb +4
Context: Before JWST, telescope observations were not sensitive enough to constrain the nature of clouds in exo-atmospheres. Recent observations, however, have inferred cloud signa…
Inclusion of sulfur chemistry in a validated C/H/O/N chemical network: identification of key C/S coupling pathways
R. Veillet, O. Venot, B. Sirjean +6
The detection of SO2 in both WASP-39 b and WASP-107 b recently brought more attention to the modeling of photochemistry in exoplanets. However, sulfur kinetics data is lacking in t…
DARWEN: Data-driven Algorithm for Reduction of Wide Exoplanetary Networks
A. Lira-Barria, J. N. Harvey, T. Konings +5
Exoplanet atmospheric modeling is advancing from chemically diverse one-dimensional (1D) models to three-dimensional (3D) global circulation models (GCMs), which are crucial for in…
Sulphur dioxide in the mid-infrared transmission spectrum of WASP-39b
Diana Powell, Adina D. Feinstein, Elspeth K. H. Lee +70
The recent inference of sulphur dioxide (SO) in the atmosphere of the hot (1100 K), Saturn-mass exoplanet WASP-39b from near-infrared JWST observations suggests that phot…