Fig. 6

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Reduced binding energy (left) and projected physical separation (right) as functions of ultrawide system total mass. In both panels, the three most fragile systems (top of Table 5) and the most separated systems (bottom of Table 5) are plotted in red triangles and green squares, respectively, while the rest of investigated ultrawide systems are plotted in blue circles. The error bars in s are smaller than the used symbols. In the left panel, the horizontal line marks the limit of at 1033 J. In the right panel, the grey solid diagonal lines mark the statistical maximum ages of 0.1, 1, and 10 Ga at which the systems are likely bound (computed with Eq. (9)), while the red dashed diagonal lines mark the corresponding orbital periods of 0.1, 1, and 2 Ga (computed with Kepler’s third law). In both cases we used the correction a ≈ 1.26 s (Fischer & Marcy 1992).
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