Long-term activity cycles in planetary M stars observed with SOPHIE

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Table 1.

Key stellar parameters of GJ 617A and GJ 411.

Parameter	GJ 617A	GJ 411
Spectral type	M0.0 V^a	M1.5 V^a
V (mag)	8.90^b	7.49^b
Distance (pc)	10.767 ± 0.002^c	2.544 ± 0.002^c
T_eff (K)	3770^c	3511^c
[Fe/H] (dex)	0.16 ± 0.16^d	−0.36 ± 0.08^e
M (M_⊙)	0.58 ± 0.08^d	0.38 ± 0.01^e
R (R_⊙)	0.63^c	0.40^c
L (L_⊙)	0.96^c	2.25 × 10⁻⁶^c
P_rot (d)	22.0^f	56.15^g
log R′_HK	−4.75 ± 0.14^h	−5.47 ± 0.10^e

Notes. ^aAlonso-Floriano (2015). ^b Cifuentes et al. (2020). ^cGaia DR3 (Gaia Collaboration 2023). ^dReiners et al. (2018). ^e Hurt et al. (2022). ^f Lafarga et al. (2021). ^g Díaz et al. (2019). ^hHobson et al. (2018).

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