Fig. 3
Portion of the reduced χ2 map on the RA and Dec offsets obtained by A) fitting the φ of the Run A data sets with a point-like companion model at fixed flux ratio f = 6 × 10-3, and B) for individual observing nights: red for 2011 Apr. 24, green for 2011 May 03/07, and blue for 2011 Jun. 11/25. The 1 ÷ 3σ confidence-contour colors range from yellow to orange.
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