TOI-4336 A b: A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system

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Volume 687 (July 2024)

A&A, 687 (2024) A48

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Table 2

Properties of TOI-4336 A and TOI-4336 A b based on our global transit model (see Sect. 5).

Parameters	Values	Priors
Luminosity, L_* (L_⊙)	${0.0114}_{- 0.0012}^{+ 0.0013}$ $0.0114_{ - 0.0012}^{ + 0.0013}$	–
Metallicity, [Fe/H] (dex)	$- {0.209}_{- 0.013}^{+ 0.012}$ $- 0.209_{ - 0.013}^{ + 0.012}$	𝒩 (−0.20, 0.12²)
Effective temperature, T_eff (K)	$3298_{- 73}^{+ 75}$ $3298_{ - 73}^{ + 75}$	𝒩 (3300, 75²)
Mass, M_* (M_⊙)	0.331 ± 0.015	𝒩 (0.330, 0.015²)
Radius, R_* (R_⊙)	${0.328}_{- 0.010}^{+ 0.010}$ $0.328_{ - 0.010}^{ + 0.010}$	𝒩 (0.331, 0.010²)
Density, ρ_* (ρ_⊙)	${9.4}_{- 0.9}^{+ 1.06}$ $9.4_{ - 0.9}^{ + 1.06}$	–
Log surface gravity, log g_* (cgs)	${4.927}_{- 0.033}^{+ 0.034}$ $4.927_{ - 0.033}^{ + 0.034}$	–
Quadratic limb-darkening coefficient u_1,g′	${0.475}_{- 0.050}^{+ 0.048}$ $0.475_{ - 0.050}^{ + 0.048}$	𝒩 (0.479, 0.050²)
Quadratic limb-darkening coefficient u_2,g′	${0.354}_{- 0.048}^{+ 0.049}$ $0.354_{ - 0.048}^{ + 0.049}$	𝒩 (0.349, 0.05²)
Quadratic limb-darkening coefficient u_1,r′	${0.551}_{- 0.048}^{+ 0.044}$ $0.551_{ - 0.048}^{ + 0.044}$	𝒩 (0.532, 0.050²)
Quadratic limb-darkening coefficient u_2,g′	${0.303}_{- 0.048}^{+ 0.049}$ $0.303_{ - 0.048}^{ + 0.049}$	𝒩 (0.278, 0.050²)
Quadratic limb-darkening coefficient u_1,z′	${0.149}_{- 0.050}^{+ 0.051}$ $0.149_{ - 0.050}^{ + 0.051}$	𝒩 (0.163, 0.050²)
Quadratic limb-darkening coefficient u_2,z′	0.360 ± 0.053	𝒩 (0.368, 0.050²)
Quadratic limb-darkening coefficient u_1,zs	${0.284}_{- 0.047}^{+ 0.050}$ $0.284_{ - 0.047}^{ + 0.048}$	𝒩 (0.276, 0.050²)
Quadratic limb-darkening coefficient u_2,zs	${0.237}_{- 0.047}^{+ 0.048}$ $0.165_{ - 0.050}^{ + 0.049}$	𝒩 (0.221, 0.050²)
Quadratic limb-darkening coefficient u_1,TESS	${0.165}_{- 0.050}^{+ 0.049}$ $0.237_{ - 0.047}^{ + 0.048}$	𝒩 (0.157, 0.050²)
Quadratic limb-darkening coefficient u_2,TESS	${0.455}_{- 0.050}^{+ 0.051}$ $0.455_{ - 0.050}^{ + 0.051}$	𝒩 (0.454, 0.050²)
Quadratic limb-darkening coefficient u_{1, ExTrA12 μm}	${0.180}_{- 0.053}^{+ 0.048}$ $0.180_{ - 0.053}^{ + 0.048}$	𝒩 (0.186, 0.050²)
Quadratic limb-darkening coefficient u_{2, ExTrA12 μm}	${0.138}_{- 0.054}^{+ 0.054}$ $0.138_{ - 0.054}^{ + 0.054}$	𝒩 (0.146, 0.050²)
Dilution TESS (%)	86.3 ± 2.9	𝒩 (86, 3²)

Dilution TRAPPIST-South (%)	${86.2}_{- 2.9}^{+ 2.7}$ $86.2_{ - 2.9}^{ + 2.7}$	𝒩 (86, 3²)
Transit depth, dF (ppm)	$3487_{- 125}^{+ 126}$ $3487_{ - 125}^{ + 126}$	–
Transit impact parameter, b (R_*)	${0.453}_{- 0.075}^{+ 0.056}$ $0.453_{ - 0.075}^{ + 0.056}$	–
Orbital period, P (days)	${16.336334}_{- 0.000023}^{+ 0.000024}$ $16.336334_{ - 0.000023}^{ + 0.000024}$	–
Mid-transit time, T₀ (BJD_TDB – 2 450 000)	${9335.57319}_{- 0.00062}^{+ 0.00068}$ $9335.57319_{ - 0.00062}^{ + 0.00068}$	–
Transit duration, W (min)	${125.38}_{- 1.18}^{+ 1.34}$ $125.38_{ - 1.18}^{ + 1.34}$	–
Orbital inclination, i_p (deg)	${89.55}_{- 0.07}^{+ 0.09}$ $89.55_{ - 0.07}^{ + 0.09}$	–
Orbital semi-major axis, a_p (au)	${0.0872}_{- 0.0014}^{+ 0.0013}$ $0.0872_{ - 0.0014}^{ + 0.0013}$	–
Scale parameter, a_p/R_*	${57.16}_{- 1.84}^{+ 2.07}$ $57.16_{ - 1.84}^{ + 2.07}$	–
Radius, R_p (R_⊕)	${2.12}_{- 0.09}^{+ 0.08}$ $2.12_{ - 0.09}^{ + 0.08}$	–
Stellar irradiation, S_p (S_⊕)	${1.50}_{- 0.17}^{+ 0.18}$ $1.50_{ - 0.17}^{ + 0.18}$	–
Equilibrium temperature, T_eq (K)	308± 9	–

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