Characterising planetary systems with SPIRou: Questions about the magnetic cycle of 55 Cnc A and two new planets around B

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Table 3

Summary of SPIRou observations.

Name	55 Cnc A	55 Cnc B
N	141	69
<S/N>	510	180
n_γ (Y) m/s	1.98	14.8
n_γ (J) m/s	2.01	12.9
n_γ (H) m/s	1.49	7.7
n_γ (K) m/s	4.72	7.9
n_γ (YJHK) m/s	0.92	1.8
σ_RV m/s	50.98	5.9

Notes. N is the number of visits, <S/N> is the mean S/N per sequence in the H band, n_γ is the RV noise per band separately and combined, and σ_RV is the dispersion.

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