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Fig. 4

image

Equilibrium vapor pressures as a function of temperature for nine different species (where experimental data are available) that could be abundant on TRAPPIST-1 planets. Solid black lines where superimposed to indicate the equilibrium temperatures of TRAPPIST-1e,f,g, and h (assuming a surface albedo of 0.2). Stars indicate the positions of the triple points. These curves were adapted from Fray & Schmitt (2009).

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