TLOCI reductions of SPHERE-IRDIS ADI H2H3 (mean combination of the H2 and H3 filters) data. a) May 12 2015; b) May 15 2015; c) mean combination of May 12 and May 15, with features annotated. From the outside in, we see a point source, which we consider as a companion candidate (cc1), an arc (A1), two full rings (R1 & R2), another arc (A2), the location of the gap seen in Fig. 1c (G), and an innermost disk structure (I1); d) same as b, for a 10 × larger dynamic range.
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