K2-399 b is not a planet - The Saturn that wandered through the Neptune desert is actually a hierarchical eclipsing binary

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Volume 689 (September 2024)

A&A, 689 (2024) L8

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Table C.4.

Prior and posteriors for the RV analysis of EPIC 248472140 presented in Sect. 3.

Parameter	Prior^†	Posterior
Orbital period, P_B [days]	𝒰(2,1000)	$846 . 62_{- 0.28}^{+ 0.22}$ $846.62^{+0.22}_{-0.28}$
Time of conjunction, T_0, B − 2400000 [days]	𝒰(59551,60551)	$59684 . 31_{- 0.85}^{+ 0.72}$ $59684.31^{+0.72}_{-0.85}$
RV semi-amplitude, K_B [m/s]	𝒰(0,100000)	$8901_{- 50}^{+ 38}$ $8901^{+38}_{-50}$
Orbital eccentricity, e_B	𝒰(0,0.9)	$0 . 4919_{- 0.0020}^{+ 0.0021}$ $0.4919^{+0.0021}_{-0.0020}$
Arg. periastron, ω_B [deg.]	𝒰(-180,180)	$- 49 . 59_{- 0.19}^{+ 0.23}$ $-49.59^{+0.23}_{-0.19}$
δ_CARMENES [km/s]	𝒯(27.7,0.3,27,28.5)	$27 . 756_{- 0.057}^{+ 0.066}$ $27.756^{+0.066}_{-0.057}$
δ_HARPS [km/s]	𝒯(27.7,0.3,27,28.5)	$27 . 905_{- 0.042}^{+ 0.032}$ $27.905^{+0.032}_{-0.042}$
δ_HARPSN [km/s]	𝒯(27.7,0.3,27,28.5)	$27 . 902_{- 0.041}^{+ 0.032}$ $27.902^{+0.032}_{-0.041}$
δ_TRES [km/s]	𝒯(27.7,0.3,27,28.5)	$27 . 919_{- 0.033}^{+ 0.035}$ $27.919^{+0.035}_{-0.033}$
σ_CARMENES [m/s]	𝒰(-2.5,3.5)	$1 . 0_{- 5.6}^{+ 6.4}$ $1.0^{+6.4}_{-5.6}$
σ_HARPS [m/s]	𝒰(-2.5,3.5)	$0 . 5_{- 3.2}^{+ 4.2}$ $0.5^{+4.2}_{-3.2}$
σ_HARPSN [m/s]	𝒰(-2.5,3.5)	$0 . 9_{- 5.2}^{+ 8.3}$ $0.9^{+8.3}_{-5.2}$
σ_TRES [m/s]	𝒰(-2.5,4.0)	$8 . 8_{- 22}^{+ 4.9}$ $8.8^{+4.9}_{-22}$

Derived parameters

Minimum mass, m_Bsin i_B [M_Å]	(derived)	0.4130 ± 0.0066
Orbit semi-major axis, a_B [AU]	(derived)	$1 . 916_{- 0.015}^{+ 0.014}$ $1.916^{+0.014}_{-0.015}$
Relative orbital separation, a_B/R_⋆	(derived)	$262 . 5_{- 8.3}^{+ 8.8}$ $262.5^{+8.8}_{-8.3}$
Stellar effective incident flux, S_B [S_⊕]	(derived)	$0 . 710_{- 0.054}^{+ 0.057}$ $0.710^{+0.057}_{-0.054}$
Stellar luminosity, L_⋆ [L_⊙]	(derived)	$2 . 61_{- 0.19}^{+ 0.20}$ $2.61^{+0.20}_{-0.19}$

Notes. ^†Prior distributions are defined as: 𝒰(a, b) for a uniform distribution between a and b, and 𝒯(μ, σ, a, b) for a normal distribution with mean μ and standard deviation σ constrained between values a and b (the so-called truncated Gaussian).

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