Stellar rotation periods determined from simultaneously measured Ca II H&K and Ca II IRT lines

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Table 2

The mean S-indices of the Ca II H&K and Ca II IRT lines and the standard deviation (σ).

Object		σ _{S _MWO}		σ _{S _{IRT_8498}}		σ _{S _{IRT_8542}}		σ _{S _{IRT_8662}}

HD 35296	0.319	0.006	0.1566	0.0017	0.1258	0.0017	0.02561	0.00034
HD 37394	0.457	0.015	0.1445	0.0015	0.1151	0.0018	0.02295	0.00036
HD 39587	0.322	0.011	0.1513	0.0015	0.1200	0.0044	0.02433	0.00041
HD 43162	0.416	0.021	0.1558	0.0028	0.1274	0.0036	0.02521	0.00068
HD 72905	0.397	0.009	0.1620	0.0016	0.1332	0.0025	0.02666	0.00036
HD 75732	0.178	0.008	0.1140	0.0006	0.0801	0.0006	0.01650	0.00011
HD 97334	0.354	0.012	0.1518	0.0017	0.1228	0.0020	0.02459	0.00034
HD 101501	0.333	0.013	0.1440	0.0017	0.1116	0.0020	0.02261	0.00039
HD 111395	0.260	0.016	0.1331	0.0016	0.0987	0.0019	0.02041	0.00037
HD 115043	0.313	0.011	0.1484	0.0020	0.1165	0.0025	0.02362	0.00034
HD 118972	0.570	0.018	0.1576	0.0016	0.1292	0.0025	0.02587	0.00037
HD 131977	0.462	0.026	0.1236	0.0014	0.0914	0.0017	0.01881	0.00030

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