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

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Table 3.

Results of the long-term activity cycle analysis obtained in this work.

Name	$log R'_{HK}$ $Mathematical equation: $ \log R\prime_{\mathrm{HK}} $$	Index	Model	Per1 [days]	Per2 [days]
GJ 617A	–4.85	S	GLS	1831.67 ± 838.75
		S	LinGLS	1752.03 ± 767.40
		Hα	GLS	1918.93 ± 920.57
		Hα	LinGLS	1752.07 ± 767.43

GJ 411	–5.42	S	GLS	688.02 ± 118.34	386.60 ± 37.36
		S	LinGLS	665.47 ± 110.70	2136.48 ± 1141.13
		Hα	GLS	not fit
		Hα	LinGLS	1623.70 ± 659.10

Notes. Columns list: (1) stellar name; (2) mean $log R'_{HK}$ $Mathematical equation: $ \log R\prime_{\mathrm{HK}} $$ value, computed from the mean SOPHIE S-index using the calibration of Boisse et al. (2010) for the V − K color and the coefficients of Astudillo-Defru et al. (2017); (3) activity index used in the analysis (S or Hα); (4) model applied to the data (GLS or LinGLS); and (5)–(6) detected periods in days. Uncertainties correspond to the half width at half maximum of the corresponding peak in the periodogram.

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