TOI-2196 b: Rare planet in the hot Neptune desert transiting a G-type star

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Table 6

MCMC parameters of the interior structure analysis and their 1 σ confidence intervals for scenario 1 (planet mass and radius as input) and scenario 2 (Fe/Si mole ratio in addition to mass and radius as input).

Parameter	Scenario 1	Scenario 2
CMF^(a)	u(0,1)
CRF^(b)
X_H/He ^(c)
M (M_⊕)	26.031 ± 1.389
R (R_⊕)	3.517 ± 0.170
Fe/Si		0.747±0.175
z_atm ^(d) (km)

Notes. ^(a)Core mass fraction. ^(b)Core radius fraction simultaneously computed with the CMF. ^(c)Hydrogen and helium mass fraction. ^(d)Planet atmosphere thickness.

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