Cloudy with a chance of metals: Indications of CO2 in the atmosphere of GJ 1214 b from high-resolution K-band spectroscopy

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Table 2

Results of the atmospheric retrievals.

Parameter	Prior range	Median value	Unit
Eq. chem., CO₂-only retrieval
T_iso	[200, 800]	${509.23}_{- 58.68}^{+ 102.0}$ $Mathematical equation: $\[509.23_{-58.68}^{+102.0}\]$$	K
log₁₀(P_c)	[−7.9, 2]	$- {0.88}_{- 2.48}^{+ 1.95}$ $Mathematical equation: $\[-0.88_{-2.48}^{+1.95}\]$$	log₁₀(bar)
C/O	[0, 1.5]	${0.63}_{- 0.41}^{+ 0.54}$ $Mathematical equation: $\[0.63_{-0.41}^{+0.54}\]$$	...
[M/H]	[−1, 4]	${1.51}_{- 0.75}^{+ 0.68}$ $Mathematical equation: $\[1.51_{-0.75}^{+0.68}\]$$	...
K_p	[50, 150]	${107.04}_{- 19.38}^{+ 22.88}$ $Mathematical equation: $\[107.04_{-19.38}^{+22.88}\]$$	km s⁻¹
v₀	[−3.5, 0.5]	$- {1.46}_{- 0.64}^{+ 0.55}$ $Mathematical equation: $\[-1.46_{-0.64}^{+0.55}\]$$	km s⁻¹
β	[0.1, 2]	1.0251(8)	...
Free chem., retrieval of seven molecules
T_iso	[100, 1000]	${397.63}_{- 197.11}^{+ 282.62}$ $Mathematical equation: $\[397.63_{-197.11}^{+282.62}\]$$	K
log₁₀(P_c)	[−7.9, 2]	$- {3.04}_{- 1.53}^{+ 2.52}$ $Mathematical equation: $\[-3.04_{-1.53}^{+2.52}\]$$	log₁₀(bar)
log₁₀VMR_H2O	[−7.9, 2]	$- {4.68}_{- 9.64}^{+ 2.34}$ $Mathematical equation: $\[-4.68_{-9.64}^{+2.34}\]$$	..
log₁₀(VMR_CH₄)	[−20, −0.1]	$- {11.7}_{- 5.46}^{+ 5.33}$ $Mathematical equation: $\[-11.7_{-5.46}^{+5.33}\]$$	..
log₁₀(VMR_CO)	[−20, −0.1]	$- {10.92}_{- 6.25}^{+ 7.24}$ $Mathematical equation: $\[-10.92_{-6.25}^{+7.24}\]$$	..
log₁₀(VMR_CO₂)	[−20, −0.1]	$- {3.2}_{- 2.26}^{+ 1.12}$ $Mathematical equation: $\[-3.2_{-2.26}^{+1.12}\]$$	..
log₁₀(VMR_H₂S)	[−20, −0.1]	$- {12.37}_{- 5.23}^{+ 5.46}$ $Mathematical equation: $\[-12.37_{-5.23}^{+5.46}\]$$	..
log₁₀(VMR_NH₃)	[−20, −0.1]	$- {11.32}_{- 5.94}^{+ 5.2}$ $Mathematical equation: $\[-11.32_{-5.94}^{+5.2}\]$$	..
log₁₀(VMR_N₂)*	[−20, −0.1]	$- {10.93}_{- 6.2}^{+ 6.54}$ $Mathematical equation: $\[-10.93_{-6.2}^{+6.54}\]$$	..
β	[0.1, 2]	1.064(5)	..
μ	calculated	${2.43}_{- 0.09}^{+ 0.86}$ $Mathematical equation: $\[2.43_{-0.09}^{+0.86}\]$$	..
[M/H]	calculated	${0.48}_{- 1.70}^{+ 0.89}$ $Mathematical equation: $\[0.48_{-1.70}^{+0.89}\]$$	..

Notes. The uncertainties quoted with the median value correspond to the 16th and 84th percentiles. (*) The VMR of N₂ should be interpreted as the combined VMR of all other metals not considered in the retrieval.

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