A joint effort to discover and characterize two resonant mini-Neptunes around TOI-1803 with TESS, HARPS-N, and CHEOPS

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Volume 695 (March 2025)

A&A, 695 (2025) A273

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Table 4

Best-fit parameters (MAP and HDI) for the eccentric configuration of the dynamical analysis with TRADES.

	MAP (HDI)	Prior
$\frac{M_{b}}{M_{⋆}} (\frac{M_{⊙}}{M_{⋆}}) \times 10^{- 6}$ ${{{M_{\rm{b}}}} \over {{M_ \star }}}\left( {{{{M_ \odot }} \over {{M_ \star }}}} \right) \times {10^{ - 6}}$	${42.32}_{- 0.81}^{+ 5.96}$ $42.32_{ - 0.81}^{ + 5.96}$	u(0.39,437.00)
P_b (days)	${6.291709}_{- 0.000055}^{+ 0.000431}$ $6.291709_{ - 0.000055}^{ + 0.000431}$	u(5.5,8.0)
$\sqrt{e_{b}} \cos ω_{b}$ $\sqrt {{e_{\rm{b}}}} \cos {\omega _{\rm{b}}}$	${0.2040}_{- 0.0128}^{+ 0.0024}$ $0.2040_{ - 0.0128}^{ + 0.0024}$	$U (- \sqrt{0.5}, \sqrt{0.5})$ ${\cal U}( - \sqrt {0.5} ,\sqrt {0.5} )$
$\sqrt{e_{b}} sin ω_{b}$ $\sqrt {{e_{\rm{b}}}} \sin {\omega _{\rm{b}}}$	${0.106}_{- 0.025}^{+ 0.026}$ $0.106_{ - 0.025}^{ + 0.026}$	$U (- \sqrt{0.5}, \sqrt{0.5})$ ${\cal U}( - \sqrt {0.5} ,\sqrt {0.5} )$
λ_b (°)	${0.053}_{- 0.051}^{+ 0.418}$ $0.053_{ - 0.051}^{ + 0.418}$	u(0,360)
$\frac{M_{c}}{M_{⋆}} (\frac{M_{⊙}}{M_{⋆}}) \times 10^{- 6}$ ${{{M_{\rm{c}}}} \over {{M_ \star }}}\left( {{{{M_ \odot }} \over {{M_ \star }}}} \right) \times {10^{ - 6}}$	$35_{- 7}^{+ 4}$ $35_{ - 7}^{ + 4}$	u(0.39,437.00)
P_c (days)	${12.89385}_{- 0.00033}^{+ 0.00056}$ $12.89385_{ - 0.00033}^{ + 0.00056}$	u(11,14)
$\sqrt{e_{c}} \cos ω_{c}$ $\sqrt {{e_{\rm{c}}}} \cos {\omega _{\rm{c}}}$	${0.1827}_{- 0.0200}^{+ 0.0092}$ $0.1827_{ - 0.0200}^{ + 0.0092}\quad$	$U (- \sqrt{0.5}, \sqrt{0.5})$ ${\cal U}( - \sqrt {0.5} ,\sqrt {0.5} )$
$\sqrt{e_{c}} sin ω_{c}$ $\sqrt {{e_{\rm{c}}}} \sin {\omega _{\rm{c}}}$	$- {0.283}_{- 0.014}^{+ 0.052}$ $- 0.283_{ - 0.014}^{ + 0.052}$	$U (- \sqrt{0.5}, \sqrt{0.5})$ ${\cal U}( - \sqrt {0.5} ,\sqrt {0.5} )$
λ_c (°)	${296.40}_{- 0.42}^{+ 1.80}$ $296.40_{ - 0.42}^{ + 1.80}$	u(0,360)
log₂ σ_jitter	${2.013}_{- 0.173}^{+ 0.089}$ $2.013_{ - 0.173}^{ + 0.089}$	u(−49.83,6.64)
RV_γ (m s⁻¹)	${1995.46}_{- 0.30}^{+ 0.42}$ $1995.46_{ - 0.30}^{ + 0.42}$	u(−3021,7035)
M_b(M_⊕)	${10.32}_{- 0.48}^{+ 1.66}$ $10.32_{ - 0.48}^{ + 1.66}$	(derived)
e_b	${0.0527}_{- 0.0062}^{+ 0.0015}$ $0.0527_{ - 0.0062}^{ + 0.0015}$	(derived)
ω_b (°)	$27_{- 6}^{+ 7}$ $27_{ - 6}^{ + 7}$	(derived)
ℳ_b (°)	$153_{- 7}^{+ 6}$ $153_{ - 7}^{ + 6}$	(derived)
M_c (M_⊕)	$8_{- 2}^{+ 1}$ $8_{ - 2}^{ + 1}$	(derived)
e_c	${0.1135}_{- 0.0318}^{+ 0.0064}$ $0.1135_{ - 0.0318}^{ + 0.0064}$	(derived)
ω_c (°)	$- 57_{- 3}^{+ 4}$ $- 57_{ - 3}^{ + 4}$	(derived)
ℳ_b (°)	$174_{- 4}^{+ 3}$ $174_{ - 4}^{ + 3}$	(derived)
σ_jitter (m s⁻¹)	${4.04}_{- 0.47}^{+ 0.24}$ $4.04_{ - 0.47}^{ + 0.24}$	(derived)

Notes. All the parameters have been defined at the reference time 2458904 BJD_TDB. ℳ is the mean anomaly. Ω has been set to 180° for both planets.

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