Fig. 4.
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Orbitally phase-folded TESS photometry of U Gru. Top: phase-folded light curve of U Gru for sectors 1 (black) and 28 (grey) with the interpolated binary model in red. Grey hatching denotes phases of primary (forward hatching) and secondary (cross hatching) eclipse. Bottom: residuals after subtraction of an interpolation binary model for sectors 1 (black) and 28 (grey).
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