Long-term OGLE monitoring of a short-period binary shows spot-driven brightness drifts aligned with the tidal axis and an orbital period change on a 2e6-year timescale suggesting mass redistribution.
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A short-period binary OGLE-BLG-ELL-006503 showing slow variations in brightness
Long-term OGLE monitoring of a short-period binary shows spot-driven brightness drifts aligned with the tidal axis and an orbital period change on a 2e6-year timescale suggesting mass redistribution.