The bulk metal content of WASP-80 b from joint interior-atmosphere retrievals - Breaking degeneracies and exploring biases with panchromatic spectra

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Volume 706 (February 2026)

A&A, 706 (2026) A263

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Table 1

All observational data used in our suite of retrievals of WASP-80 b.

Parameters	WASP-80	References
Stellar radius (R_⊙)	0.571	1
Stellar mass (M_⊙)	0.57	1
Effective temperature (K)	4145	1
[Fe/H]	$- {0.13}_{- 0.17}^{+ 0.15}$ $- 0.13_{ - 0.17}^{ + 0.15}$	1
Age (Gyr)	1.352 ± 0.222	2

Parameters	WASP-80 b	References

Planet radius (R_Jup)	${0.952}_{- 0.027}^{+ 0.026}$ $0.952_{ - 0.027}^{ + 0.026}$	1
Planet mass (M_Jup)	${0.554}_{- 0.039}^{+ 0.030}$ $0.554_{ - 0.039}^{ + 0.030}$	1
Equilibrium temperature (K)	825	3
Semi-major axis (AU)	0.03479	3

Datasets & geometry	Wavelength (μm)	References

HST/STIS – transmission	0.4–1.0	4
HST/WFC3 – transmission	1.1–1.7	4
JWST/NIRCam – transmission	2.5–4.0	5
HST/WFC3 – emission	1.1–1.7	6
JWST/NIRCam F322W2 – emission	2.4–4.0	5
JWST/NIRCam F444W – emission	4.0–5.0	7
JWST/MIRI LRS – emission	5.0–12.0	7

Notes. The equilibrium temperature is reported at null Bond albedo. References: [1] Triaud et al. (2013), [2] Gallet (2020), [3] Mancini et al. (2014), [4] Wong et al. (2022), [5] Bell et al. (2023), [6] Jacobs et al. (2023), [7] Wiser et al. (2025).

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