... VLT

Based on observations obtained at the Very Large Telescope of the European Southern Observatory at Paranal, Chile in program 65.L-0629, 65.I-0011, 268.D-5746, 72.C-0653.

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...

Appendix A is only available in electronic form at http://www.edpsciences.org

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... IRAF

IRAF is distributed by the National Optical Astronomy Observatories, which is operated by the Association of Universities for Research in Astronomy, Inc. (AURA) under cooperative agreement with the National Science Foundation.

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... to 4 AU

It is noted that the average RV precision for B 34 alone is significantly better (90 m s^-1) and, therefore, allows detection of less massive companions at larger separations, e.g. 1  $M_{\rm Jup}$ out to 1 AU.

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... wide

The exact separation ranges covered depend on the mass and are e.g. >50 AU for a 20  $M_{\rm Jup}$ in orbit around a 60  $M_{\rm Jup}$, or >300 AU for a 1  $M_{\rm Jup}$ in orbit around a 60  $M_{\rm Jup}$.

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