Information content of JWST spectra of WASP-39b | Astronomy & Astrophysics (A&A)

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Volume 687 (July 2024)

A&A, 687 (2024) A110

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Table A.1

Summary of our best-fit Helios-r2 retrieval outcomes for each of the four JWST spectra: NIRCam, NIRISS, NIRSpec G395H, and NIRSpec PRISM.

Parameter	NIRCam grey 3 FP	NIRCam non-grey 3 FP	NIRISS grey 2 FP	NIRISS non-grey 1 FP	G395H grey 1 FP	G395H non-grey 2 FP	PRISM grey 1 FP	PRISM non-grey 1 FP
log g [cm/s²]	${2.70}_{- 0.03}^{+ 0.02}$ $\[2.70_{-0.03}^{+0.02}\]$	${2.69}_{- 0.03}^{+ 0.02}$ $\[2.69_{-0.03}^{+0.02}\]$	${2.64}_{- 0.04}^{+ 0.03}$ $\[2.64_{-0.04}^{+0.03}\]$	${2.66}_{- 0.03}^{+ 0.03}$ $\[2.66_{-0.03}^{+0.03}\]$	${2.69}_{- 0.04}^{+ 0.04}$ $\[2.69_{-0.04}^{+0.04}\]$	${2.67}_{- 0.03}^{+ 0.03}$ $\[2.67_{-0.03}^{+0.03}\]$	${2.65}_{- 0.04}^{+ 0.04}$ $\[2.65_{-0.04}^{+0.04}\]$	${2.77}_{- 0.02}^{+ 0.02}$ $\[2.77_{-0.02}^{+0.02}\]$

R_P [R_J_up]	${1.28}_{- 0.02}^{+ 0.02}$ $\[1.28_{-0.02}^{+0.02}\]$	${1.28}_{- 0.02}^{+ 0.02}$ $\[1.28_{-0.02}^{+0.02}\]$	${1.28}_{- 0.02}^{+ 0.02}$ $\[1.28_{-0.02}^{+0.02}\]$	${1.28}_{- 0.02}^{+ 0.02}$ $\[1.28_{-0.02}^{+0.02}\]$	${1.31}_{- 0.03}^{+ 0.03}$ $\[1.31_{-0.02}^{+0.02}\]$	${1.28}_{- 0.02}^{+ 0.02}$ $\[1.28_{-0.02}^{+0.02}\]$	${1.27}_{- 0.02}^{+ 0.02}$ $\[1.27_{-0.02}^{+0.02}\]$	${1.29}_{- 0.02}^{+ 0.02}$ $\[1.29_{-0.02}^{+0.02}\]$

R_s [R_⊙]	${0.95}_{- 0.01}^{+ 0.01}$ $\[0.95_{-0.01}^{+0.01}\]$	${0.95}_{- 0.01}^{+ 0.01}$ $\[0.95_{-0.01}^{+0.01}\]$	${0.94}_{- 0.02}^{+ 0.02}$ $\[0.94_{-0.02}^{+0.02}\]$	${0.94}_{- 0.02}^{+ 0.02}$ $\[0.94_{-0.02}^{+0.02}\]$	${0.94}_{- 0.02}^{+ 0.02}$ $\[0.94_{-0.02}^{+0.02}\]$	${0.94}_{- 0.02}^{+ 0.01}$ $\[0.94_{-0.02}^{+0.01}\]$	${0.95}_{- 0.02}^{+ 0.01}$ $\[0.95_{-0.02}^{+0.01}\]$	${0.95}_{- 0.01}^{+ 0.01}$ $\[0.95_{-0.01}^{+0.01}\]$

log H₂O	$- {4.15}_{- 0.38}^{+ 0.49}$ $\[-4.15_{-0.38}^{+0.49}\]$	$- {4.10}_{- 0.41}^{+ 0.49}$ $\[-4.10_{-0.41}^{+0.49}\]$	$- {1.45}_{- 0.20}^{+ 0.19}$ $\[-1.45_{-0.20}^{+0.19}\]$	$- {1.13}_{- 0.12}^{+ 0.08}$ $\[-1.13_{-0.12}^{+0.08}\]$	$- {5.28}_{- 0.36}^{+ 0.37}$ $\[-5.28_{-0.36}^{+0.37}\]$	$- {6.35}_{- 0.33}^{+ 0.34}$ $\[-6.35_{-0.33}^{+0.34}\]$	$- {3.10}_{- 0.19}^{+ 0.20}$ $\[-3.10_{-0.19}^{+0.20}\]$	$- {3.53}_{- 0.31}^{+ 0.44}$ $\[-3.53_{-0.31}^{+0.44}\]$

log CO	-	-	-	-	-	-	$- {2.85}_{- 0.28}^{+ 0.17}$ $\[-2.85_{-0.28}^{+0.17}\]$	-

log CO₂	$- {3.34}_{- 0.53}^{+ 0.44}$ $\[-3.34_{-0.53}^{+0.44}\]$	$- {3.30}_{- 0.52}^{+ 0.43}$ $\[-3.30_{-0.52}^{+0.43}\]$	-	-	$- {6.46}_{- 0.37}^{+ 0.44}$ $\[-6.46_{-0.37}^{+0.44}\]$	$- {6.49}_{- 0.28}^{+ 0.34}$ $\[-6.49_{-0.28}^{+0.34}\]$	$- {4.34}_{- 0.22}^{+ 0.24}$ $\[-4.34_{-0.22}^{+0.24}\]$	$- {5.01}_{- 0.35}^{+ 0.53}$ $\[-5.01_{-0.35}^{+0.53}\]$

log H₂S	-	-	-	-	-	-	$- {4.07}_{- 0.31}^{+ 0.27}$ $\[-4.07_{-0.31}^{+0.27}\]$	$- {4.75}_{- 0.38}^{+ 0.42}$ $\[-4.75_{-0.38}^{+0.42}\]$

log K	-	-	$- {7.50}_{- 0.40}^{+ 0.41}$ $\[-7.50_{-0.40}^{+0.41}\]$	$- {5.59}_{- 0.51}^{+ 0.46}$ $\[-5.59_{-0.51}^{+0.46}\]$	-	-	$- {7.01}_{- 1.86}^{+ 1.87}$ $\[-7.01_{-1.86}^{+1.87}\]$	$- {7.80}_{- 1.44}^{+ 1.43}$ $\[-7.80_{-1.44}^{+1.43}\]$

log Na	-	-	-	-	-	-	$- {3.75}_{- 038}^{+ 0.37}$ $\[-3.75_{-038}^{+0.37}\]$	$- {5.15}_{- 0.35}^{+ 0.44}$ $\[-5.15_{-0.35}^{+0.44}\]$

log SO₂	-	-	-	-	-	$- {7.55}_{- 0.28}^{+ 0.18}$ $\[-7.55_{-0.28}^{+0.18}\]$	$- {5.68}_{- 0.62}^{+ 0.31}$ $\[-5.68_{-0.62}^{+0.31}\]$	-

log CH₄	-	-	-	-	-	-	-	-

log τ_cloud	$- {2.45}_{- 1.55}^{+ 1.75}$ $\[-2.45_{-1.55}^{+1.75}\]$	$- {2.08}_{- 1.82}^{+ 2.03}$ $\[-2.08_{-1.82}^{+2.03}\]$	${1.34}_{- 1.06}^{+ 1.06}$ $\[1.34_{-1.06}^{+1.06}\]$	${0.66}_{- 0.15}^{+ 0.13}$ $\[0.66_{-0.15}^{+0.13}\]$	$- {2.95}_{- 1.31}^{+ 2.31}$ $\[-2.95_{-1.31}^{+2.31}\]$	${1.17}_{- 0.29}^{+ 0.18}$ $\[1.17_{-0.29}^{+0.18}\]$	$- {0.39}_{- 0.50}^{+ 2.23}$ $\[-0.39_{-0.50}^{+2.23}\]$	${2.63}_{- 0.36}^{+ 0.24}$ $\[2.63_{-0.36}^{+0.24}\]$

log P_cloudtop [bar]	$- {1.76}_{- 2.66}^{+ 1.90}$ $\[-1.76_{-2.66}^{+1.90}\]$	$- {2.19}_{- 2.16}^{+ 1.93}$ $\[-2.19_{-2.16}^{+1.93}\]$	$- {1.73}_{- 0.14}^{+ 0.13}$ $\[-1.73_{-0.14}^{+0.13}\]$	$- {2.79}_{- 0.18}^{+ 0.22}$ $\[-2.79_{-0.18}^{+0.22}\]$	$- {1.44}_{- 2.96}^{+ 1.79}$ $\[-1.44_{-2.96}^{+1.79}\]$	$- {5.06}_{- 0.61}^{+ 0.73}$ $\[-5.06_{-0.61}^{+0.73}\]$	$- {1.91}_{- 0.99}^{+ 0.38}$ $\[-1.91_{-0.99}^{+0.38}\]$	$- {1.62}_{- 0.24}^{+ 0.19}$ $\[-1.62_{-0.24}^{+0.19}\]$

Q₀	-	${47.96}_{- 28.03}^{+ 31.34}$ $\[47.96_{-28.03}^{+31.34}\]$	-	${49.31}_{- 30.66}^{+ 31.21}$ $\[49.31_{-30.66}^{+31.21}\]$	-	${49.74}_{- 30.20}^{+ 30.84}$ $\[49.74_{-30.20}^{+30.84}\]$	-	${50.32}_{- 30.89}^{+ 30.65}$ $\[50.32_{-30.89}^{+30.65}\]$

a₀	-	${4.43}_{- 0.86}^{+ 0.95}$ $\[4.43_{-0.86}^{+0.95}\]$	-	${5.61}_{- 0.48}^{+ 0.28}$ $\[5.61_{-0.48}^{+0.28}\]$	-	${5.49}_{- 0.62}^{+ 0.35}$ $\[5.49_{-0.62}^{+0.35}\]$	-	${3.57}_{- 0.37}^{+ 0.54}$ $\[3.57_{-0.37}^{+0.54}\]$

log r_cloud [cm]	-	$- {3.86}_{- 1.85}^{+ 1.74}$ $\[-3.86_{-1.85}^{+1.74}\]$	-	$- {3.99}_{- 1.89}^{+ 1.81}$ $\[-3.99_{-1.89}^{+1.81}\]$	-	$- {4.06}_{- 1.91}^{+ 1.90}$ $\[-4.06_{-1.91}^{+1.90}\]$	-	$- {3.92}_{- 1.81}^{+ 1.78}$ $\[-3.92_{-1.81}^{+1.78}\]$

Notes. Each simplified model includes uniform abundance profiles for the represented species. Best-fits are presented for both grey and non-grey cloud models. The number of free parameters for each temperature-pressure profile is denoted as FP.

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