Observations of scattered light from exoplanet atmospheres

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Volume 685 (May 2024)

A&A, 685 (2024) A104

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Table 1

Prior distributions or values adopted for the reflected light from Heng et al. (2021) and thermal emission phase curves from Morris et al. (2022), as well as parameters for stellar and instrumental artifacts.

Parameter	Prior dist./value	Interval
Reflected light
ω₀	0	–
ω′	𝒰	[0, 1]
g	𝒩 (0, 0.01)	[−1,1]
A_g	𝒰 (for inh. models^(★))	[0, 0.6]
$x_{1}^{'} = \sin (x_{1})$ $x_1^\prime = \sin \left( {{x_1}} \right)$	𝒰	[−1,0]
$x_{2}^{'} = \sin (x_{2})$ $x_2^\prime = \sin \left( {{x_2}} \right)$	𝒰	[0,1]
Thermal emission
C₁₁	𝒩(0, 0.1)	[0, 0.2]
α	0.6	–
ω_drag	4.5	–
f	𝒩 (2^−0.5, 0.01)	[0.67, 0.74]
∆ϕ	0°	–
Stellar artifacts
Ellipsoidal amp.	𝒩(A_eilip, 0.25A_eilip)	[0, 100] ppm
Doppler amp.	𝒩(A_Doppler, 0.25A_Doppler)	[0, 50] ppm
GP and uncertainty
σ_GP	𝒩 (σ_f, 0.1 σ_f)	[0, 10σ_f ] ppm
ρ_GP	30 d	–
Jitter	𝒰	[0,10³] ppm

Notes. ^(★)The inhomogeneous reflector model defines A_g as a free parameter, whereas the homogeneous reflector model derives a deterministic A_g from ω, g, and the scattering phase function.

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