activity
20182026
most citedAtmospheric Reconnaissance of TRAPPIST-1 b with JWST/NIRISS: Evidence for Strong Stellar Contamination in the Transmission Spectra

170 citations · 704 across the 44 of their papers we have counts for

collaborators
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13 papers · 1 filter

astro-ph.EP2025★ 8 cited

Diversity in the haziness and chemistry of temperate sub-Neptunes

Pierre-Alexis Roy, Björn Benneke, Marylou Fournier-Tondreau +17

Recent transit observations of K2-18b and TOI-270d revealed strong molecular absorption signatures, lending credence to the idea that temperate sub-Neptunes (T=250-40…

astro-ph.EP2025

Reanalysis of the eclipses of LHS 1140 c: No evidence of an atmosphere and implications for the internal structure of the planet

Alexandra Rochon, Étienne Artigau, Drew Weisserman +4

We present the reanalysis of three 15 micron JWST/MIRI secondary eclipses of LHS 1140 c, a warm super-Earth (R = 1.272 R) in a 3.78-day orbit around an M4.5 d…

astro-ph.EP2025

A complex structure of escaping helium spanning more than half the orbit of the ultra-hot Jupiter WASP-121\,b

Romain Allart, Louis-Philippe Coulombe, Yann Carteret +19

Atmospheric escape of planets on short orbital periods, driven by the host star's irradiation, influences their evolution, composition, and atmospheric dynamics. Our main avenue to…

astro-ph.EP2025

A Thick Volatile Atmosphere on the Ultrahot Super-Earth TOI-561 b

Johanna K. Teske, Nicole L. Wallack, Anjali A. A. Piette +10

Ultrashort-period (USP) exoplanets -- with R and periods 1 day -- are expected to be stripped of volatile atmospheres by intense host star irradiation…

astro-ph.EP2025

Precise Constraints on the Energy Budget of WASP-121 b from its JWST NIRISS/SOSS Phase Curve

Jared Splinter, Louis-Philippe Coulombe, Robert C. Frazier +20

Ultra-hot Jupiters exhibit day-to-night temperature contrasts upwards of 1000 K due to competing effects of strong winds, short radiative timescales, magnetic drag, and H2 dissocia…

astro-ph.IM2025

On the synergetic use of Ariel and JWST for exoplanet atmospheric science

Quentin Changeat, Pierre-Olivier Lagage, Giovanna Tinetti +27

This paper explores the potential for strategic synergies between the JWST and the Ariel telescopes, two flagship observatories poised to revolutionise the study of exoplanet atmos…