Fig. 1

Radial velocities for the 14 stars in common to the different observing runs. Observations at the ESO 1.5-m telescope are black squares; those at the MPG/ESO 2.2-m are [red] triangles. The difference between the averages from the two telescopes is less than 30 m s-1, and the spread is 0.3 km s-1 after 3 suspected binaries are discarded.
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