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Table 3

Summary of RV Observations.

Star No. of measurements ΔtRV (a) a for ΔtRV (b) σRV

HARPS HIRES CORALIE Total (days) (AU) (m s−1)
τ Ceti 1038 272 314 1624 7353 6.3 2.8
Kapteyn’s star 125 31 0 156 7046 4.7 3.3
AX Mic 0 8 0 8 740 1.3 2.6
40 Eri 0 109 0 109 4766 4.9 12.4
HD 36395 0 41 0 41 6220 5.7 6.0
HD 42581 198 44 0 242 7240 6.1 4.4

Notes. (a) Total time baseline of RV observations. (b)Semi-major axis corresponding to an orbital period that equals the time baseline of the RV observations given the stellar mass in Table 1.

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