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Coupled Photochemical–Climate Modeling of Plausible Tenuous Outgassed Atmospheres on the TRAPPIST-1 Planets

  • Authors: Megan T. Gialluca, Victoria S. Meadows, Andrew P. Lincowski, Trent B. Thomas, P. C. Hinton, David Brain, David Crisp

Megan T. Gialluca et al 2026 The Planetary Science Journal 7 .

  • Provider: AAS Journals

Caption: Figure 4.

Surface pressure–temperature (PT) points for each atmosphere in our work for each planet. Points are shown plotted over the phase diagram for water, where the gray, blue, and red shaded regions indicate solid, liquid, and gas phases, respectively. Points are colored by atmospheric composition (see figure legend). Globally averaged PT pairs are shown with black borders, and dayside and nightside profiles for T-1 b, c, and d are shown with yellow and magenta borders, respectively. Atmospheres containing SO2 are shown by triangle points. T-1 d and e both have atmospheres that may be fully contained in the liquid water region of the phase diagram.

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