The SPIRou Legacy Survey - Near-infrared and optical radial velocity analysis of Gl 480 and Gl 382 using SPIRou, HARPS and CARMENES spectrographs

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Volume 696 (April 2025)

A&A, 696 (2025) A152

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Table 5

Orbital and derived planetary parameters from the analysis of Gl 480.

	SPIRou	Optical	ALL	Priors
Instrumental parameters

γ_{S PIRou} (m s⁻¹)	${7915.6}_{- 1.3}^{+ 1.3}$ $\[7915.6_{-1.3}^{+1.3}\]$	−	${7915.6}_{- 1.3}^{+ 1.2}$ $\[7915.6_{-1.3}^{+1.2}\]$	𝒰(−10¹⁰, 10¹⁰)
γ_CARMENES (m s⁻¹)	−	$- {0.03}_{- 1.2}^{+ 1.2}$ $\[-0.03_{-1.2}^{+1.2}\]$	${0.02}_{- 1.2}^{+ 1.2}$ $\[0.02_{-1.2}^{+1.2}\]$	𝒰(−10¹⁰, 10¹⁰)
γ_HARPS (m s⁻¹)	−	$- {0.88}_{- 1.4}^{+ 1.4}$ $\[-0.88_{-1.4}^{+1.4}\]$	$- {0.08}_{- 1.5}^{+ 1.5}$ $\[-0.08_{-1.5}^{+1.5}\]$	𝒰(−10¹⁰, 10¹⁰)
σ_{S PIRou} (m s⁻¹)	${2.4}_{- 0.3}^{+ 0.4}$ $\[2.4_{-0.3}^{+0.4}\]$	−	${2.4}_{- 0.3}^{+ 0.4}$ $\[2.4_{-0.3}^{+0.4}\]$	ℳℒ𝒰 (y_σ, 2y_ptp)
σ_CARMENES (m s⁻¹)	−	${0.2}_{- 0.2}^{+ 1.2}$ $\[0.2_{-0.2}^{+1.2}\]$	${0.3}_{- 0.3}^{+ 1.4}$ $\[0.3_{-0.3}^{+1.4}\]$	ℳℒ𝒰 (y_σ, 2y_ptp)
σ_HARPS (m s⁻¹)	−	${0.6}_{- 0.6}^{+ 1.8}$ $\[0.6_{-0.6}^{+1.8}\]$	${0.8}_{- 0.8}^{+ 2.0}$ $\[0.8_{-0.8}^{+2.0}\]$	ℳℒ𝒰 (y_σ, 2y_ptp)

Wapiti systematics

a₁ (m/s)	${4.8}_{- 7.2}^{+ 7.2}$ $\[4.8_{-7.2}^{+7.2}\]$	−	${5.0}_{- 7.6}^{+ 7.2}$ $\[5.0_{-7.6}^{+7.2}\]$	𝒰(−10², 10²)
a₂ (m/s)	$- {11.1}_{- 5.8}^{+ 5.8}$ $\[-11.1_{-5.8}^{+5.8}\]$	−	$- {11.0}_{- 5.7}^{+ 5.7}$ $\[-11.0_{-5.7}^{+5.7}\]$	𝒰(−10², 10²)
a₃ (m/s)	$- {21.6}_{- 6.2}^{+ 6.0}$ $\[-21.6_{-6.2}^{+6.0}\]$	−	$- {21.7}_{- 6.0}^{+ 6.2}$ $\[-21.7_{-6.0}^{+6.2}\]$	𝒰(−10², 10²)
a₄ (m/s)	${9.2}_{- 5.0}^{+ 5.0}$ $\[9.2_{-5.0}^{+5.0}\]$	−	${9.1}_{- 5.0}^{+ 5.0}$ $\[9.1_{-5.0}^{+5.0}\]$	𝒰(−10², 10²)

GP parameters

A_{S PIRou} (m s⁻¹)	${5.3}_{- 0.8}^{+ 0.9}$ $\[5.3_{-0.8}^{+0.9}\]$	−	${5.2}_{- 0.8}^{+ 0.9}$ $\[5.2_{-0.8}^{+0.9}\]$	ℳℒ𝒰 (y_σ, 2y_ptp)
λ_{S PIRou} (days)	${64.5}_{- 11.6}^{+ 14.9}$ $\[64.5_{-11.6}^{+14.9}\]$	−	${64.2}_{- 11.5}^{+ 15.6}$ $\[64.2_{-11.5}^{+15.6}\]$	Posterior_dET
Γ_{S PIRou}	${3.0}_{- 0.6}^{+ 0.7}$ $\[3.0_{-0.6}^{+0.7}\]$	−	${3.0}_{- 0.5}^{+ 0.7}$ $\[3.0_{-0.5}^{+0.7}\]$	Posterior_dET
P_{rot,S PIRou} (days)	${20.8}_{- 0.2}^{+ 0.2}$ $\[20.8_{-0.2}^{+0.2}\]$	−	${20.8}_{- 0.2}^{+ 0.2}$ $\[20.8_{-0.2}^{+0.2}\]$	𝒰(1, 10³)
A_Optical (m s⁻¹)	−	${5.5}_{- 0.5}^{+ 0.6}$ $\[5.5_{-0.5}^{+0.6}\]$	${5.5}_{- 0.6}^{+ 0.7}$ $\[5.5_{-0.6}^{+0.7}\]$	ℳℒ𝒰 (y_σ, 2y_ptp)
λ_Optical (days)	−	${71.0}_{- 13.5}^{+ 19.0}$ $\[71.0_{-13.5}^{+19.0}\]$	${72.1}_{- 14.5}^{+ 21.3}$ $\[72.1_{-14.5}^{+21.3}\]$	ℒ𝒰 (δt_av, 10t_span)
Γ_Optical	−	${13.2}_{- 5.4}^{+ 5.2}$ $\[13.2_{-5.4}^{+5.2}\]$	${12.6}_{- 6.4}^{+ 5.3}$ $\[12.6_{-6.4}^{+5.3}\]$	ℒ𝒰(.1, 50)
P_rot,Optical (days)	−	${21.5}_{- 0.1}^{+ 0.1}$ $\[21.5_{-0.1}^{+0.1}\]$	${21.5}_{- 0.1}^{+ 0.2}$ $\[21.5_{-0.1}^{+0.2}\]$	𝒰(1, 10³)

Notes. The parameters derived from the Wapiti corrected RV data from SPIRou are compared to those obtained by combining optical data from HARPS and CARMENES. The parameters derived by combining all datasets correspond to the ALL column.

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