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Fig. 9


b) IRDIS H23-band TLOCI + ADI image. The overplotted green ellipses (solid lines) are the fits to R1, R2 and I1, as listed in Table 2, while the red (dashed) and purple (dash dot) ellipses depict the two scenarios where A1 is either the backward-facing side of ring 1, or the forward-facing side of a 3rd ring further out (sketched in panels c) and d)), respectively. c) First explanation for A1, for the same considerations as Fig. 6: A1 is the bottom/backward facing side of Ring 1, for which R1 is the top/forward facing side, (i.e., r(A1) ≈ r(R1)). d) Second explanation for A1: A1 is the top/forward facing side of a third ring, with r(A1) >r(R1). Both the red and the purple ellipses are selected based on the assumption that compared to R1 and R2, A1 would have roughly the same aspect ratio between major and minor axes as well as the same ratio between ellipse-star offset and the major axis.

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