Improved characterization of the TOI-2141 system: A dense sub-Neptune with non-transiting inner and outer companions

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Volume 704 (December 2025)

A&A, 704 (2025) A174

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Table 4

Priors and posterior distributions (median and 68% credibility intervals) for each fit parameter of the final joint model obtained for the TOI-2141 system using juliet.


Parameter	Prior	Posterior	Units
ρ_⋆	𝒩(1473, 100)	$1521_{- 95}^{+ 96}$ $\[1521_{-95}^{+96}\]$	kg m⁻³

P_c	𝒰(4.8, 6.0)	${5.4624}_{- 0.0027}^{+ 0.0026}$ $\[5.4624_{-0.0027}^{+0.0026}\]$	d
t_0,c	𝒰(1976.0, 1982.0)	${1979.19}_{- 0.56}^{+ 0.58}$ $\[1979.19_{-0.56}^{+0.58}\]$	BJD–2 457 000
K_c	𝒰(0, 20)	${2.40}_{- 0.33}^{+ 0.33}$ $\[2.40_{-0.33}^{+0.33}\]$	m s⁻¹

P_b	𝒩(18.26, 0.1)	${18.261608}_{- 2 e - 05}^{+ 1.9 e - 05}$ $\[18.261608_{-2 e-05}^{+1.9 e-05}\]$	d
t_0,b	𝒩(1992.5, 1.0)	${1992.502}_{- 0.0013}^{+ 0.0014}$ $\[1992.502_{-0.0013}^{+0.0014}\]$	d
r_1,b	𝒰(0, 1)	${0.767}_{- 0.014}^{+ 0.013}$ $\[0.767_{-0.014}^{+0.013}\]$	. . .
r_2,b	𝒰(0, 1)	${0.03037}_{- 0.00034}^{+ 0.00035}$ $\[0.03037_{-0.00034}^{+0.00035}\]$	. . .
K_b	𝒰(0, 20)	${5.25}_{- 0.35}^{+ 0.35}$ $\[5.25_{-0.35}^{+0.35}\]$	m s⁻¹

P_d	𝒰(50, 70)	${60.45}_{- 0.25}^{+ 0.24}$ $\[60.45_{-0.25}^{+0.24}\]$	d
t_0,d	𝒰(1900.0, 1960.0)	${1940.5}_{- 5.2}^{+ 5.2}$ $\[1940.5_{-5.2}^{+5.2}\]$	d
K_d	𝒰(0, 20)	${2.61}_{- 0.34}^{+ 0.34}$ $\[2.61_{-0.34}^{+0.34}\]$	m s⁻¹

γ_HARPS–N	𝒰(−19900.0, −19800.0)	$- {19829.97}_{- 0.25}^{+ 0.26}$ $\[-19829.97_{-0.25}^{+0.26}\]$	m s⁻¹
σ_HARPS–N	𝒥(0.1, 20)	${1.70}_{- 0.30}^{+ 0.23}$ $\[1.70_{-0.30}^{+0.23}\]$	m s⁻¹
γ_SOPHIE	𝒰(−19900.0, −19800.0)	$- {19860.58}_{- 0.60}^{+ 0.62}$ $\[-19860.58_{-0.60}^{+0.62}\]$	m s⁻¹
σ_SOPHIE	𝒥(0.1, 20)	${5.25}_{- 0.60}^{+ 0.62}$ $\[5.25_{-0.60}^{+0.62}\]$	m s⁻¹
q_1,TESS	𝒰(0, 1)	${0.30}_{- 0.13}^{+ 0.18}$ $\[0.30_{-0.13}^{+0.18}\]$	. . .
q_2,TESS	𝒰(0, 1)	${0.37}_{- 0.25}^{+ 0.34}$ $\[0.37_{-0.25}^{+0.34}\]$	. . .
q_1,CHEOPS	𝒰(0, 1)	${0.32}_{- 0.06}^{+ 0.08}$ $\[0.32_{-0.06}^{+0.08}\]$	. . .
q_2,CHEOPS	𝒰(0, 1)	${0.76}_{- 0.24}^{+ 0.17}$ $\[0.76_{-0.24}^{+0.17}\]$	. . .
σ_TESS	𝒥(0.1, 1000)	${1.34}_{- 1.11}^{+ 6.52}$ $\[1.34_{-1.11}^{+6.52}\]$	ppm
σ_CHEOPS	𝒥(0.1, 1000)	${230.85}_{- 6.40}^{+ 6.65}$ $\[230.85_{-6.40}^{+6.65}\]$	ppm

Notes. The prior labels of 𝒩, 𝒰, and 𝒥 represent normal, uniform, and Jeffrey’s distributions, respectively.

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