... variables

Table 2 is also 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/460/783

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... and +0.03

The metalicity [M/H] is the decadic logarithm of the metal abundance relative to solar. I refer to metalicities [M/H]=-0.4 to +0.4 as "near solar''. The errors of the measured metalicities are about 0.2 dex.

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... interferometry

Note that the derivation of limb-darkened interferometric radii involves model atmosphere theory.

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...

An alternative polynomial approximation was given by Beuermann et al. (1999) in their Eq. (7).

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... diagram

A metalicity of -0.5 dex corresponds approximately to a line 0.8 mag below the single-star bright limit in the $M_{\rm K}(V-K)$ diagram. Specifically, Gl 908, Gl 015A, Gl 411, Gl 725A and B, Gl 643, CM Dra A and B, and G3-33 are just below this line and no longer of "near-solar'' metalicity.

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... sample

T832-10443, 2M0149+29, 2M0345+25, and 2M1439+19.

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... phase

Phase $\varphi=0$refers to inferior conjunction of the seondary star.

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