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 1

Properties of the TOI-4336 system.

Parameters	Values			Refs.
Designation
This work	TOI-4336 A	TOI-4336 B	TOI-4336 C
TIC	166184428	166184426	166184390	[1]
2MASS	J13442546-4020155	J13442500-4020122	J13442755-4018400	[2]
Gaia (DR3)	6113245033656232448	6113245033659187200	6113271494953274752	[3]
UCAC4	249-060094	249-060092	249-060096	[4]
WISE	J134425.61-402014.8	J134425.16-402011.4	J134427.70-401839.2	[5]
WDS	J13444-4020A	J13444-4020C	J13444-4020B	[6]
Photometric magnitudes
TESS (mag)	11.0196 ± 0.0074	11.1825 ± 0.0074	11.9501 ± 0.0073	[1]
B (mag)	14.489 ± 0.001	14.510 ± 0.037	16.369 ± 0.012	[1,4,7]
V (mag)	12.893 ± 0.006	12.911 ± 0.052	14.732 ± 0.001	[1,4,7]
G (mag)	12.245831 ± 0.002774	12.434232 ± 0.002785	13.2893 ± 0.000731	[3]
J (mag)	9.453 ± 0.024	9.589 ± 0.024	10.249 ± 0.022	[2]
H (mag)	8.867 ± 0.046	9.038 ± 0.025	9.723 ± 0.023	[2]
K (mag)	8.632 ± 0.024	8.756 ± 0.021	9.426 ± 0.021	[2]
W1 (mag)	8.479 ± 0.029	8.588 ± 0.03	9.243 ± 0.023	[5]
W2 (mag)	8.333 ± 0.025	8.411 ± 0.026	9.063 ± 0.02	[5]
W3 (mag)	8.218 ± 0.025	8.311 ± 0.027	8.887 ± 0.025	[5]
W4 (mag)	7.865 ± 0.2	8.345 ± 0.303	8.579001 ± 0.255	[5]
Astrometric properties
Distance (pc)	22.45 ± 0.02	22.44 ± 0.03	22.45 ± 0.08	[8]
Parallax (mas)	44.53 ± 0.03	44.55 ± 0.04	44.50 ± 0.02	[3]
RA (J2000)	13 : 44 : 25.4773	13 : 44 : 25.0160	13 : 44 : 27.5674	[3]
Dec (J2000)	−40 : 20 : 15.5222	-40 : 20 : 12.1623	−40 : 18 : 40.0242	[3]
μ_RA (mas yr⁻¹)	151.813 ± 0.033	150.407 ± 0.039	151.991 ± 0.016	[3]
μ_Dec (mas yr⁻¹)	68.402 ± 0.025	71.661 ± 0.028	71.798 ± 0.014	[3]
RUWE	1.86	1.80	1.21	[3]
U (km s⁻¹)	23.5 ± 0.3	23.3 ± 0.3	24.0 ± 0.9	[3]
V (km s⁻¹)	0.6 ± 0.3	0.6 ± 0.4	0.2 ± 0.9	[3]
W (km s^-1)	10.0 ± 0.2	10.4 ± 0.2	10.6 ± 0.5	[3]
Radial velocity (km s⁻¹)	18.37 ± 0.36	18.36 ± 0.51	19.23 ± 1.33	[3]
This work
SpT	M3.5 ± 0.5	M3.5 ± 0.5	M4.0 ± 0.5	SpeX
T_eff (K)	3300 ± 75	3255 ± 75	3150 ± 75	SED
[Fe/H] (dex)	−0.20 ± 0.12	−0.21 ± 0.12	−0.17 ± 0.12	SpeX
	+0.04 ± 0.20	–	–	LDSS3
L_bol,* (L_⊙)	0.0116 ± 0.0003	0.0102 ± 0.0002	0.0053 ± 0.0002	F_bol,* + parallax
F_bol (10⁻¹⁰ erg cm⁻² s−1)	7.40 ± 0.17	6.50 ± 0.15	3.35 ± 0.12	SED
R_* (R_⊙)	0.330 ± 0.015	0.318 ± 0.015	0.224 ± 0.012	F_bol + T_eff + parallax
M_* (M_⊙)	0.331 ± 0.010	0.314 ± 0.015	0.236 ± 0.007	M_K ^(a)
ρ_* (ρ_⊙)	${12.97}_{- 1.66}^{+ 2.03}$ $12.97_{ - 1.66}^{ + 2.03}$	${13.72}_{- 1.79}^{+ 2.20}$ $13.72_{ - 1.79}^{ + 2.20}$	${22.89}_{- 3.16}^{+ 3.91}$ $22.89_{ - 3.16}^{ + 3.91}$	R_* + M_*
log g_* (cgs)	4.92 ± 0.04	4.93 ± 0.04	${5.04}_{- 0.04}^{+ 0.05}$ $5.04_{ - 0.04}^{ + 0.05}$	R_* + M_*
Radial velocity (km s⁻¹)	18.0 ± 0.5	18.7 ± 0.5	–	CHIRON
Age (Gyr)	${6.7}_{- 3.1}^{+ 2.7}$ $6.7_{ - 3.1}^{ + 2.7}$	${6.7}_{- 3.1}^{+ 2.7}$ $6.7_{ - 3.1}^{ + 2.7}$	${6.7}_{- 3.1}^{+ 2.7}$ $6.7_{ - 3.1}^{ + 2.7}$	Kinematics

Notes. ^(a)The stellar mass is estimated via the empirical M_K based relations of Mann et al. (2019).

References. [1] Stassun et al. (2019), [2] Cutri et al. (2003), [3] Gaia Collaboration (2022), [4] Zacharias et al. (2013), [5] Cutri et al. (2021), [6] Mason et al. (2001), [7] Henden et al. (2015), [8] Bailer-Jones et al. (2021).

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