No thick carbon dioxide atmosphere on the rocky exoplanet | ResearchBunny

Index

Abstract

This paper reports the detection of thermal emission from the dayside of TRAPPIST-1 c using JWST's MIRI instrument. The measured planet-to-star flux ratio disfavors a thick, CO2-rich atmosphere, ruling out various atmospheric models including cloud-free O2/CO2 mixtures and a Venus-analogue atmosphere. Thinner atmospheres or a bare-rock surface are consistent with the findings, suggesting a volatile-poor formation history for TRAPPIST-1 c.

Publisher

Nature

Published On

Aug 24, 2023

Authors

Sebastian Zieba, Laura Kreidberg, Elsa Ducrot, Michaël Gillon, Caroline Morley, Laura Schaefer, Patrick Tamburo, Daniel D. B. Koll, Xintong Lyu, Lorena Acuña, Eric Agol, Aishwarya R. Iyer, Renyu Hu, Andrew P. Lincowski, Victoria S. Meadows, Franck Selsis, Emeline Bolmont, Avi M. Mandell, Gabrielle Suissa

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