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Table 1

Observation log.

Instrument/telescope Observatory Spectral resolution Spectral range (Å) N

HARPS/3.6 m ESO La Silla (Chile) 120 000 37806910 84
ELODIE/1.93 m OHP OHP (France) 40 000 38506800 69
FEROS/2.20 m MPG/ESO La Silla (Chile) 48 000 35009200 43
SOPHIE/1.93 m OHP OHP (France) 75 000 38726943 20
EBASIM/2.15 m CASLEO CASLEO (Argentina) 30 000 50007000 7

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