Fig. 5
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Signal-to-noise ratio for an Io-sized moon on an Io-like orbit (left) and an Earth-sized moon on a Callisto-like orbit (right) around an ε Indi Ab-like planet as a function of blackbody temperature and system-observer distance (we note that the axis scale and datum differ between the two moons). The grey, blue, and red lines mark the 1σ, 3σ, and 5σ boundaries, respectively.
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