activity
20242026
most citedJWST/NIRISS reveals the water-rich "steam world" atmosphere of GJ 9827 d

92 citations · 166 across the 10 of their papers we have counts for

collaborators

11 papers

astro-ph.EP2026

The SPACE Program II: No discernible spectral features in the transmission spectrum of the sub-Neptune HD 191939 b observed with HST/WFC3

Cyril Gapp, Lorena Acuña-Aguirre, Reza Ashtari +17

The atmospheres of sub-Neptunes provide a window into their internal structure and history, shedding light on the origin of this common, but enigmatic, class of exoplanets. However…

astro-ph.EP2026

The panchromatic JWST dayside spectrum of WASP-121 b reveals a refractory-rich formation

K. Angelique Kahle, Paul Mollière, Laura Kreidberg +16

One path to understand how planets form is to link their present-day atmospheric composition to predictions from planet formation models. For the hottest planets, the abundances of…

astro-ph.EP2026★ 1 cited

Atmospheric asymmetries in WASP-121 b revealed by rotational transits detected with JWST

Cyril Gapp, Aurélien Falco, Thomas M. Evans-Soma +6

Close-in exoplanets are tidally locked to their host star and thus exhibit extreme atmospheric temperature gradients. It has been theorized that the fraction of star light absorbed…

astro-ph.EP2025★ 7 cited

Possible Evidence for the Presence of Volatiles on the Warm Super-Earth TOI-270 b

Louis-Philippe Coulombe, Björn Benneke, Joshua Krissansen-Totton +25

The search for atmospheres on rocky exoplanets is a crucial step in understanding the processes driving atmosphere formation, retention, and loss. Past studies have revealed the ex…

astro-ph.EP2025★ 5 cited

The SPACE Program. I. The featureless spectrum of HD 86226 c challenges sub-Neptune atmosphere trends

K. Angelique Kahle, Jasmina Blecic, Reza Ashtari +26

Sub-Neptune exoplanets are the most abundant type of planet known today. As they do not have a Solar System counterpart, many open questions exist about their composition and forma…

astro-ph.EP2025★ 15 cited

WASP-121b's transmission spectrum observed with JWST/NIRSpec G395H reveals thermal dissociation and SiO in the atmosphere

Cyril Gapp, Thomas M. Evans-Soma, Joanna K. Barstow +8

WASP-121b has been established as a benchmark ultrahot Jupiter, serving as a laboratory for the atmospheric chemistry and dynamics of strongly irradiated extrasolar gas giants. Her…

astro-ph.EP2025

SiO and a super-stellar C/O ratio in the atmosphere of the giant exoplanet WASP-121b

Thomas M. Evans-Soma, David K. Sing, Joanna K. Barstow +15

Refractory elements such as iron, magnesium, and silicon can be detected in the atmospheres of ultrahot giant planets. This provides an opportunity to quantify the amount of refrac…

astro-ph.EP2025★ 37 cited

Escaping Helium and a Highly Muted Spectrum Suggest a Metal-Enriched Atmosphere on Sub-Neptune GJ3090b from JWST Transit Spectroscopy

Eva-Maria Ahrer, Michael Radica, Caroline Piaulet-Ghorayeb +27

Sub-Neptunes, the most common planet type, remain poorly understood. Their atmospheres are expected to be diverse, but their compositions are challenging to determine, even with JW…

astro-ph.EP2025★ 9 cited

Refractory and Volatile Species in the UV-to-IR Transmission Spectrum of Ultra-hot Jupiter WASP-178b with HST and JWST

Joshua D. Lothringer, Katherine A. Bennett, David K. Sing +17

The atmospheres of ultra-hot Jupiters are unique compared to other planets because of the presence of both refractory and volatile gaseous species, enabling a new lens to constrain…

astro-ph.EP2025

Statistical trends in JWST transiting exoplanet atmospheres

Guangwei Fu, Kevin B. Stevenson, David K. Sing +13

Our brains are hardwired for pattern recognition as correlations are useful for predicting and understanding nature. As more exoplanet atmospheres are being characterized with JWST…

astro-ph.EP2024★ 92 cited

JWST/NIRISS reveals the water-rich "steam world" atmosphere of GJ 9827 d

Caroline Piaulet-Ghorayeb, Bjorn Benneke, Michael Radica +30

With sizable volatile envelopes but smaller radii than the solar system ice giants, sub-Neptunes have been revealed as one of the most common types of planet in the galaxy. While t…