activity
20192026
most citedSO2, silicate clouds, but no CH4 detected in a warm Neptune

128 citations · 826 across the 29 of their papers we have counts for

collaborators

30 papers

astro-ph.EP2026

WALTzER: Wide-band Atmospheric Laboratory for Transiting Exoplanet Research

A. G. Sreejith, L. Fossati, M. Lendl +81

Understanding the origin and evolution of planetary atmospheres, and the connection between their lower and upper atmospheric layers, remains a fundamental challenge in exoplanet s…

astro-ph.SR2026

Stellar flares with Ariel: detection prospects and impacts on exoplanet spectroscopy

K. Vida, B. Seli, B. Edwards

Stellar flares are important tracers of magnetic activity and can significantly influence the characterization of exoplanet host stars by introducing time-dependent astrophysical v…

astro-ph.EP2025★ 2 cited

A JWST Transit of a Jupiter Analog: II. A Search for Exomoons

David Kipping, Ben Cassese, Quentin Changeat +3

We present a search for exomoons around the Jupiter-like exoplanet Kepler-167e using a NIRSpec JWST transit. Our 60 hour time series clearly reveals the enormous impact of long-ter…

astro-ph.EP2025

A JWST Transit of a Jupiter Analog I: Constraints on the Oblateness of Kepler-167e

Ben Cassese, David Kipping, Quentin Changeat +5

In October 2024 JWST observed a transit of Kepler-167e, a Jupiter-analog planet on a 1000+ day orbit. These observations, recorded over a long baseline of nearly 60 hours, were des…

astro-ph.EP2024★ 18 cited

Measuring Tracers of Planet Formation in the Atmosphere of WASP-77A b: Sub-stellar O/H and C/H ratios, with a stellar C/O ratio and a potentially Super-stellar Ti/H ratio

Billy Edwards, Quentin Changeat

We present a comprehensive atmospheric retrieval study of the hot Jupiter WASP-77A\,b using eclipse observations from the Hubble Space Telescope (HST) and JWST. Using atmospheric r…

astro-ph.EP2024★ 35 cited

Is the atmosphere of the ultra-hot Jupiter WASP-121b variable?

Quentin Changeat, Jack W. Skinner, James Y-K. Cho +12

We present a comprehensive analysis of the Hubble Space Telescope observations of the atmosphere of WASP-121 b, a ultra-hot Jupiter. After reducing the transit, eclipse, and phase-…