Atmospheric constraints on GJ 1214 b from CRIRES+ and prospects for characterisation with ANDES

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Table 1

Stellar and planet parameters of the GJ 1214 system.

Parameter	Value	Reference
Stellar parameters
M_* (M_⊙)	${0.1820}_{- 0.0041}^{+ 0.0042}$ $Mathematical equation: $0.1820^{+0.0042}_{-0.0041}$$	M24
R_* (R_⊙)	${0.2162}_{- 0.0024}^{+ 0.0025}$ $Mathematical equation: $0.2162^{+0.0025}_{-0.0024}$$	M24
T_eff (K)	3101±43	M24
d (pc)	14.642±0.018	M24
Planet parameters
M_p (M_⊕)	${8.41}_{- 0.35}^{+ 0.36}$ $Mathematical equation: $8.41^{+0.36}_{-0.35}$$	M24
R_p (R_⊕)	${2.733}_{- 0.031}^{+ 0.033}$ $Mathematical equation: $2.733^{+0.033}_{-0.031}$$	M24
ρ_p (g cm^-3)	2.26±0.11	M24
K_p (km s^-1)	106.68±6.78	This work
T_eq (K)	567.0±7.6	M24
Transit and system parameters
P (d)	${1.580404531}_{+ 0.000000017}^{+ 0.000000018}$ $Mathematical equation: $1.580404531^{+0.000000018}_{+0.000000017}$$	M24
t₀ (BJD)	2459782.0176719±0.0000083	K23
t₁₄ (days)	${0.036236}_{- 0.000045}^{+ 0.000046}$ $Mathematical equation: $0.036236^{+0.000046}_{-0.000045}$$	M24
a (au)	0.01505±0.00011	M24
i (deg)	${88.980}_{- 0.085}^{+ 0.094}$ $Mathematical equation: $88.980^{+0.094}_{-0.085}$$	M24
e	${0.0062}_{- 0.0044}^{+ 0.0079}$ $Mathematical equation: $0.0062^{+0.0079}_{-0.0044}$$	M24
K (m s^-1)	${14.38}_{- 0.56}^{+ 0.57}$ $Mathematical equation: $14.38^{+0.57}_{-0.56}$$	M24

Notes. M24: Mahajan et al. (2024), and K23: Kempton et al. (2023).

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