The GAPS Programme at TNG - LV. Multiple molecular species in the atmosphere of HAT-P-11 b and review of the HAT-P-11 planetary system

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Volume 686 (June 2024)

A&A, 686 (2024) A127

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Table 2

Model parameters for the fit of the Kepler data.

Parameters	Symbol	Units	C.I.	Prior
Stellar density	ρ_⋆	ρ_⊙	1.915+0.081	U(1.5,2.5)
Time of transit	T₀	days	${0.0000967}_{- 0.0000082}^{+ 0.0000084}$ $\[0.0000967_{-0.0000082}^{+0.0000084}\]$	U(−0.05,0.05)
Planet-to-star radius ratio	R_p/R_⋆	−	${0.058993}_{- 0.000070}^{+ 0.000065}$ $\[0.058993_{-0.000070}^{+0.000065}\]$	U(0.05, 0.07)
Impact parameter	b	−	${0.227}_{- 0.015}^{+ 0.013}$ $\[0.227_{-0.015}^{+0.013}\]$	U(0, 0.6)
First LD coefficient	q₁	−	${0.4644}_{- 0.0063}^{+ 0.0062}$ $\[0.4644_{-0.0063}^{+0.0062}\]$	U(0,1)
Second LD coefficient	q₂	−	${0.4813}_{- 0.0062}^{+ 0.0064}$ $\[0.4813_{-0.0062}^{+0.0064}\]$	U(0,1)
	$\sqrt{2 e} cos ω_{⋆}$ $\[\sqrt{2 e} \cos \omega_{\star}\]$	−	${0.7021}_{- 0.0041}^{+ 0.0035}$ $\[0.7021_{-0.0041}^{+0.0035}\]$	U(0.5, 0.9)
	$\sqrt{2 e} sin ω_{⋆}$ $\[\sqrt{2 e} \sin \omega_{\star}\]$	−	0 150±0.037	U(0, 0.5)
Secondary eclipse depth	δ_ecl	ppm	${6.95}_{- 0.64}^{+ 0.66}$ $\[6.95_{-0.64}^{+0.66}\]$	U(0, 20)

Derived parameters	Symbol	Units	C.I.

Planetary radius^(a)	R_p	R_J	0.4466 ± 0.0059
Scaled semi-major axis	a/R_⋆	−	${15.05}_{- 0.22}^{+ 0.21}$ $\[15.05_{-0.22}^{+0.21}\]$
Orbital inclination	i	deg	89.027±0.068
Transit duration	T₁₄	hr	${2.35562}_{- 0.00094}^{+ 0.00093}$ $\[2.35562_{-0.00094}^{+0.00093}\]$
Orbital eccentricity	e	−	${0.2577}_{- 0.0025}^{+ 0.0033}$ $\[0.2577_{-0.0025}^{+0.0033}\]$
Stellar argument of periastron	^ω_⋆	degree	${12.0}_{- 3.0}^{+ 2.9}$ $\[12.0_{-3.0}^{+2.9}\]$

Notes. U stands for a uniform prior.^(a)The uncertainty includes the uncertainty on the stellar radius.

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