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Table 1

Properties of our sample stars.

Star MV Mass [M]a Teff [K]a  [Fe/H] a log ga log() ST # meas. # nights/span [days] Texp [s]

β Hyi 2.8 1.10 5872 –0.11 3.95 G2lV 2766b 6/6 40 to 50b
μ Ara 5.2 1.08 5780 0.30 4.27 –5.20 G3IV-V 2104d 8/8 100d
α Cen A 0.0 1.09 5623 0.22 4.22 –5.07 G2V 4959c 5/5 2 to 10c
τ Ceti 3.5 0.63 5310 –0.52 4.44 –4.93 G8V 1962e 5/6 23 to 40e
α Cen B 1.3 0.91 5248 0.26 4.55 –4.98 K1V 783 8/8 13

Notes. For each star, the dead time due to CCD readout is 31 s, ST is for spectral type and Texp for exposure time.

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