Osiris revisited: Confirming a solar metallicity and low C/O in HD 209458 b

Open Access

Table 6

Summary of all retrievals run on the combined HST-JWST spectra.

Retrieval model	Line species	Water abundance log (χ_H₂O) in VMR	log (P_cloud) [log (bar)]	log (P_base) [log (bar)]	$χ_{red}^{2}$ $\[\chi_{\text {red }}^{2}\]$	Bayesian evidence log (Z)	Z_ref/Z
No clouds	All	$- {4.39}_{- 0.22}^{+ 0.24}$ $\[-4.39_{-0.22}^{+0.24}\]$	. . .	. . .	1.22	364.2 ± 0.0	. . .
Patchy clouds	All	$- {4.25}_{- 0.60}^{+ 0.90}$ $\[-4.25_{-0.60}^{+0.90}\]$	$- {2.16}_{- 0.78}^{+ 0.68}$ $\[-2.16_{-0.78}^{+0.68}\]$	. . .	1.02	366.1 ± 0.0	. . .
Clouds	All	$- {4.47}_{- 0.50}^{+ 1.26}$ $\[-4.47_{-0.50}^{+1.26}\]$	$- {1.45}_{- 1.12}^{+ 0.27}$ $\[-1.45_{-1.12}^{+0.27}\]$	. . .	1.06	366.3 ± 0.0	31.6

Clouds	No H₂O	. . .	$- {0.65}_{- 0.06}^{+ 0.08}$ $\[-0.65_{-0.06}^{+0.08}\]$	. . .	3.36	322.1 ± 0.0	5.0 · 10⁴⁵
Clouds	No CH₄	$- {4.26}_{- 0.60}^{+ 1.20}$ $\[-4.26_{-0.60}^{+1.20}\]$	$- {1.62}_{- 1.09}^{+ 0.37}$ $\[-1.62_{-1.09}^{+0.37}\]$	. . .	1.06	366.5 ± 0.0	20.0
Clouds	No NH₃	$- {4.51}_{- 0.47}^{+ 1.26}$ $\[-4.51_{-0.47}^{+1.26}\]$	$- {1.43}_{- 1.11}^{+ 0.25}$ $\[-1.43_{-1.11}^{+0.25}\]$	. . .	1.01	366.7 ± 0.0	12.6
Clouds	No HCN	$- {4.52}_{- 0.47}^{+ 1.23}$ $\[-4.52_{-0.47}^{+1.23}\]$	$- {1.44}_{- 1.10}^{+ 0.25}$ $\[-1.44_{-1.10}^{+0.25}\]$	. . .	1.03	366.7 ± 0.0	12.6
Clouds	No Na	$- {4.46}_{- 0.52}^{+ 1.29}$ $\[-4.46_{-0.52}^{+1.29}\]$	$- {1.47}_{- 1.15}^{+ 0.28}$ $\[-1.47_{-1.15}^{+0.28}\]$	. . .	1.02	366.6 ± 0.2	15.8
Clouds	No CO₂	$- {2.58}_{- 1.02}^{+ 1.70}$ $\[-2.58_{-1.02}^{+1.70}\]$	$- {2.19}_{- 0.77}^{+ 1.92}$ $\[-2.19_{-0.77}^{+1.92}\]$	. . .	1.74	354.3 ± 0.0	3.16 · 10¹³
Clouds	No CO	$- {4.56}_{- 0.46}^{+ 1.25}$ $\[-4.56_{-0.46}^{+1.25}\]$	$- {1.41}_{- 1.09}^{+ 0.24}$ $\[-1.41_{-1.09}^{+0.24}\]$	. . .	1.08	366.4 ± 0.0	25.1
Clouds	Only H₂O, CO₂	$- {4.51}_{- 0.48}^{+ 1.15}$ $\[-4.51_{-0.48}^{+1.15}\]$	$- {1.47}_{- 1.00}^{+ 0.25}$ $\[-1.47_{-1.00}^{+0.25}\]$	. . .	0.98	367.8 ± 0.1	ref
Clouds	With SO₂	$- {4.35}_{- 0.59}^{+ 1.27}$ $\[-4.35_{-0.59}^{+1.27}\]$	$- {1.53}_{- 1.17}^{+ 0.34}$ $\[-1.53_{-1.17}^{+0.34}\]$	. . .	1.04	366.0 ± 0.0	63.1
Clouds	With H₂S	$- {4.37}_{- 0.57}^{+ 1.30}$ $\[-4.37_{-0.57}^{+1.30}\]$	$- {1.52}_{- 1.19}^{+ 0.33}$ $\[-1.52_{-1.19}^{+0.33}\]$	. . .	1.09	366.0 ± 0.0	63.1
Clouds	More informed prior for CO	$- {2.80}_{- 0.41}^{+ 0.42}$ $\[-2.80_{-0.41}^{+0.42}\]$	$- {2.84}_{- 0.40}^{+ 0.40}$ $\[-2.84_{-0.40}^{+0.40}\]$	. . .	1.03	3A5.4 ± 0.2	251.2

Complex clouds	All	$- {2.81}_{- 0.71}^{+ 0.47}$ $\[-2.81_{-0.71}^{+0.47}\]$	. . .	$- {1.27}_{- 0.78}^{+ 0.99}$ $\[-1.27_{-0.78}^{+0.99}\]$	1.02	365.9 ± 0.0	. . .
Complex patchy clouds	All	$- {3.48}_{- 0.73}^{+ 0.71}$ $\[-3.48_{-0.73}^{+0.71}\]$	. . .	$- {1.35}_{- 0.85}^{+ 0.98}$ $\[-1.35_{-0.85}^{+0.98}\]$	1.05	366.1 ± 0.0	. . .
Complex clouds	Only H₂O, CO₂	$- {2.86}_{- 0.96}^{+ 0.51}$ $\[-2.86_{-0.96}^{+0.51}\]$	. . .	$- {1.17}_{- 0.77}^{+ 0.95}$ $\[-1.17_{-0.77}^{+0.95}\]$	0.97	366.4 ± 0.0	25.1

Notes. The more complex cloud model is described by Eq. (2), and for this model. For a description of all cloud models, see Table 3. The model with the highest Bayesian evidence is the one with clouds and only H₂O and CO₂. The results for all the parameters and models are summarised in Tables A.2 and A.3.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.