Characterizing planetary systems with SPIRou: Detection of a sub-Neptune in a 6-day period orbit around the M dwarf Gl 410

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Table 11

Circular orbit parameters and physical properties of Gl 410b derived from the activity-corrected SOPHIE RV measurements using a GP based on the SOPHIE RVs alone and a GP using B_ℓ as an activity proxy.

	SOPHIE–GP	SOPHIE–GP
	GP on RV_SOPHIE alone	GP informed on B_{ℓ SPIRou}
Orbital parameters
P_b [days]	${6.020}_{- 0.006}^{+ 0.005}$ $6.020_{ - 0.006}^{ + 0.005}$	${6.02}_{- 0.01}^{+ 0.02}$ $6.02_{ - 0.01}^{ + 0.02}$
K_b (m s^–1)	7.6 ± 1.4	4.7 ± 1.7
Tperi_b (JD)	59646.53 ± 0.19	${59646.62}_{- 0.42}^{+ 0.38}$ $59646.62_{ - 0.42}^{ + 0.38}$
Planet parameters
M_b sin(i) (M_⊕)	14.5 ± 2.6	8.9 ± 3.3
a_b (au)	0.0531 ± 0.0007	0.0531 ± 0.0008

Notes. Epochs given in JD-2400000.0.

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