Based on observations collected at the German-Spanish Astronomical Center on Calar Alto, Spain, and at the European Southern Observatory, La Silla, Chile.

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Full Tables A.1 and A.2 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/376/982 and Figs. B.1 and C.1 are only available in electronic form at http://www.edpsciences.org

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...-band

This discussion can be restriced to the K-band, because all companions examined here have been detected in J, H and K.

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