Rossiter-McLaughlin detection of the 9-month period transiting exoplanet HIP41378 d

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Volume 668 (December 2022)

A&A, 668 (2022) A172

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Table A.1

List of parameters used in the classical analysis.

Parameter model	Prior	Posterior (median and 68.3% C.I.)
		2019	2019 + 2022
Rossiter-McLaughlin model parameters
Period P_d [d]	fixed	278.3618
Transit epoch 2019 T_0,19 [BJD - 2400000]	𝒩(58836.4318, 0.0833)	58836.4195 ± 0.0271	58836.4169 ± 0.0249
Transit epoch 2022 T_0,22 [BJD - 2400000]	𝒩(59671.5049, 0.0833)	−	59671.5279 ± 0.0634
Semi-major axis [R_*]	fixed	147.03
Orbital inclination i_p [°]	fixed	89.81
Projected obliquity λ [°]	𝒰(−90, 360)	$40_{- 44}^{+ 45}$ $40_{ - 44}^{ + 45}$	$46_{- 37}^{+ 28}$ $46_{ - 37}^{ + 28}$
Eccentricity [°]	fixed	0
Limb darkening coefficient u_a	fixed	0.315
Limb darkening coefficient u_b	fixed	0.304
Width of the non-rotating line profile β₀ [km s⁻¹]	fixed	3.2375
Stellar equatorial velocity v sin i_* [ km s⁻¹]	𝒩(5.5, 1)	5.9 ± 1.4	3.8 ± 1.0
Width of the CCF σ₀ [km s⁻¹]	fixed	4.5864
Planet radius R_p [R_*]	fixed	0.0253
Stellar radius R_* [R_⊙]	fixed	1.28

Instrumental parameters
Jitter HARPS-N 2019 [m s⁻¹]	𝒰(0, 10)	0.63 ± 0.56	0.68 ± 0.59
Jitter HARPS-N 2022 [ m s⁻¹]	𝒰(0, 10)	−	1.08 ± 0.78
Jitter ESPRESSO 2022 [ m s⁻¹]	𝒰(0, 10)	−	0.56 ± 0.17
Offset HARPS-N 2019 [ m s⁻¹]	𝒰(50000, 51000)	53198.08 ± 0.75	5 197.72 ± 0.68
Offset HARPS-N 2022 [ m s⁻¹]	𝒰(50000, 51000)	−	53193.55 ± 12.57*
Offset ESPRESSO 2022 [m s⁻¹]	𝒰(50000, 51000)	−	50600.73 ± 12.54*

Gaussian Process parameters
coefficient ℓ	𝒰(0, 100)	−	4.0 ± 1.8
coefficient A	𝒰(0, 100)	−	$15_{- 8}^{+ 32}$ $15_{ - 8}^{ + 32}$

* The relative offset between HARPS-N and ESPRESSO in 2022 is < 1 m s⁻¹.

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