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Table 2

Retrieval parameters and prior distributions for the free chemistry approach used in the cloud-free and non-gray cloud models.

Parameter Prior
Type Value
log g (cm/s2) Gaussian 2.0-5.5
d (pc) Gaussian Measured
f Uniform 0.2-2.0
xi Log-uniform 10−12−10−2
10ε* Log-uniform 0.01minσi2100maxσi2Mathematical equation: $0.01 \cdot \min \sigma_i^2$--$100 \cdot \max \sigma_i^2$
Temperature profile
T0 (K) Uniform 500-3000
bi=1,...,4 Uniform 0.1-0.95
RCB (bar) Log-uniform 1.0-102
γ Uniform 1.0-2.0
Gray clouds
pt (bar) Log-uniform 10−3−102
bc Log-uniform 1-10
τc Uniform −10-20
Non-gray clouds
Pt (bar) Log-uniform 10−3−102
bc Log-uniform 1-10
τc Uniform −10-20
Q0 Uniform 1-100
a0 Uniform 3-6
a (μm) Log-uniform 10−7−0.1

*We considered an additional variance through si2=σi2+10ϵMathematical equation: $s_i^2=\sigma_i^2+10^\epsilon$, where σi are the reported observational uncertainties (see Kitzmann et al. 2020).

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