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Fig. 1

image

Top: squared visibility measurements and the fitted visibility curve corresponding to a 1D diameter θ1D = 0.353 mas. Bottom: data residuals scaled by the errors on the measurements. The symbols represent the night the data were taken: ⋄ = 2012 April 18, °= 2012 May 21, □= 2014 May 03, and = 2014 May 04 (Sect. 2.2.2).

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