where index i = 1, 2, R is the radius of a component expressed in solar radii, T is its effective temperature, BC is a bolometric correction interpolated from the Flower (1996) tables for a given temperature and V is the intrinsic magnitude of a component. The parallax to a particular system was calculated as the unweighted average parallax of the two components.
Figure 5. Direct comparison of the Gaia and the photometric parallaxes for a few SBC relations. The errorbars in most cases are smaller than the size of the symbols. Insets show histograms like in Figure 4 but expressed in terms of uncertainty of dϖ. The Gaussians show the expected distribution if no offset is present.
Figure 7. Photocenter movement of eclipsing binaries in our sample expressed as a fraction of Gaia DR2 parallax vs. the fractional uncertainty of the Gaia parallax. The meanings of the symbols are the same as in Figure 1.
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