The GAPS Programme at TNG - LVI. Characterisation of the low-density gas giant HAT-P-67 b with GIARPS

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Table 5

Best-fit parameters from the DE-MCMC Gaussian analysis.

Peak position	c	R_eff	FWHM	Significance	$δ_{R_{p}} / H_{eq}$ ${\delta _{{{\rm{R}}_{\rm{p}}}}}/{H_{{\rm{eq}}}}$
(nm)	(%)	(Rp)	(nm)	(σ)
${1083.3624}_{- 0.0043}^{+ 0.0041}$ $1083.3624_{ - 0.0043}^{ + 0.0041}$	${5.56}_{- 0.30}^{+ 0.29}$ $5.56_{ - 0.30}^{ + 0.29}$	3.04 ± 0.07	${0.1701}_{- 0.009}^{+ 0.011}$ $0.1701_{ - 0.009}^{ + 0.011}$	19.0	48.5 ± 35.8

Notes. From left to right: the peak position of the He I, the absorption (expressed both as contrast c and R_eff), FWHM obtained from the DE-MCMC analysis, the significance of the detection, and the ratio between the equivalent height of the He I atmosphere and the atmospheric scale height. We determined the values and the 1 σ uncertainties of the derived parameters from the medians and the 16-84% quantiles of their posterior distributions.

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