Probing the atmosphere of WASP-69 b with low- and high-resolution transmission spectroscopy

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Table 2

Retrieval parameters.

Parameter	Symbol (unit)	Prior	Retrieved value ^(a)
Planet temperature	T_p (K)		900 ± 410	940 ± 400
Planet radius	R_p (R_Jup)		1.01 ± 0.02	0.99 ± 0.03
Water abundance	logH₂O		− 2.5 ± 1.1	− 2.7 ± 1.3
Sodium abundance	logNa		...	− 11.3 ± 5.0
Rayleigh strength/enhancement factor	logf_Ray		4.6 ± 1.7	4.3 ± 1.6
Rayleigh power-law index	logα_Ray		− 5.6 ± 3.0	− 5.0 ± 2.4
Top cloud pressure	logp_top (bar)		− 3.1 ± 1.1	− 3.0 ± 1.2
Bayesian information criterion	BIC	...	63.22	78.55

Notes. ^(a) Mean parameter values with 1σ uncertainties corresponding to retrievals done using the WFC3 and O1 data, and WFC3 and O2 data, respectively. The best-fit parameter values are given as dashed vertical lines in Figs. 10 and 11, respectively.

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