Sub-Jupiter gas giants orbiting giant stars uncovered using a Bayesian framework

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Volume 704 (December 2025)

A&A, 704 (2025) A283

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Table F.2

Prior choices used in this work.

Parameter	Prior
Keplerian Parameters

P [days]	𝒰(0.1, 3 × max(t¹))
K [ms⁻¹]	𝒰(0.1, 3 × max(\|rv\|))
Θ [rads]	𝒰(0, 2π)
ω [rads]	𝒰(0, 2π)
e_TC	𝒩(0, 0.1²)
e_C	𝒩(0, 0.3²)
e_F	ℱ(0)

Noise Parameters

γ [ms⁻¹]	𝒰(0, max(\|rv\|))
θ_jit [ms⁻¹]	𝒩(5, 5)
Linear Correlation Coefficient c	𝒰(−max(\|l\|), max(\|l\|))
MA Coefficient ϕ	𝒰(−1, 1)
MA Timescale τ [days]	ℱ(5)

Acceleration Parameter

$\dot{γ}$ $\[\dot{\gamma}\]$ [ms⁻¹/yr]	𝒰(−1, 1)

¹t =Time baseline of the data.

e_TC and e_C are the tightly constrained and constrained priors, respectively.

ℱ represents a fixed parameter.

We note that these are the general prior forms, used for the signal search. All k − 1 formats are constrained to the previously detected signal parameters (see text).

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