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Clump properties assuming circular orbits for a range of dimming event durations (as labelled). The brown region marks the approximate location of the RZ Psc asteroid belt (or the inner edge of a more extended disc). The blue-shaded region shows the range of Herbig Ae inner disc edge radii. The dashed line shows where a clump has an azimuthal extent similar to the scale height of a typical gas-rich disc.
