Medium-resolution spectrum of the exoplanet HIP 65426 b

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Volume 648 (April 2021)

A&A, 648 (2021) A59

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Table 2

Estimates of the atmospheric parameters of HIP 65426 b for each grid of synthetic precomputed spectra and for each method.

`BT-SETTL15`

			T_eff	log(g)	R	Radial velocity	log(L∕L_⊙)
			(K)	(dex)	(R_Jup)	(km s⁻¹)
`ForMoSA`

1.0–4.7 μm low T_eff with continuum			1464	3.20	1.42	21.8	–4.07
1.0–4.7 μm high T_eff with continuum			1645	4.38	0.98	22.8

K band low T_eff with continuum			1461	≤3.25	1.43	21.7	−4.09
K band high T_eff with continuum			1610	4.19	1.03	22.3	–4.19

K band without the continuum			1633	≤4.00	–	18.7	–

`TExTRIS`

K band low T_eff without the continuum			1400	3.0	–	20	–
K band high T_eff without the continuum			1700	3.5	–	20	–

χ² minimization

K band low T_eff without the continuum			1400	3.5	–	–	–
K band high T_eff without the continuum			1800	3.5	–	–	–

`Exo-REM`

	T_eff	log(g)	[M/H]	C/O	R	Radial velocity	log(L∕L_⊙)
	(K)	(dex)			(R_Jup)	(km s⁻¹)

`ForMoSA`

K band with continuum	1518	≤4.20	0.05	≤0.50	1.28	20.2

K band without the continuum	1639	≤4.5	0.02	≤0.55	–	17.0	–

`TExTRIS`

K band without the continuum	1700	3.5	0.0	0.40	–	20	–

χ² minimization

K band without the continuum	1500	3.5	0.0	0.40	–	–	–

Notes. The errors are statistical and result from the Bayesian inversion. When posteriors are located at the edge of the grid, an upper or lower limit is defined for the corresponding parameter.

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