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Table 2

Models used for the retrieval of the WASP-117b atmosphere.

Model name Prior in parameters Short description
Model 1 T ∈ [500, 1500] K log(P0∕1bar) ∈ [−12, +2] C∕O ∈ [0.1, 1.6] [Fe/H] ∈ [−1.5, +3] High [Fe/H] & gray cloud
log(Pcloud) ∈ [−6, +2]

Model 2 As in Model 1 except [Fe/H] ∈ [−1.5, +1.75] Low [Fe/H] & gray cloud

Model 3 As in Model 1 except [Fe/H] ∈ [−1.5, +1.75] γ ∈ [−6, 0] log(κ0) ∈ [−10, +10] Low [Fe/H] & gray cloud & haze layer

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