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Fig. 7

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VINCI squared visibilities measured on L2 Pup, as a function of the baseline length (top panel) and of the baseline position angle (bottom panel) at an effective wavelength of 2.19 μm. The solid black dots are the VINCI visibility measurements, the red diamonds are the best fit uniform ellipse model visibilities (see Sect. 2.2.2 for details), and the yellow squares show the visibility derived from the RADMC-3D model presented in Sect. 3. The dashed curve in the top panel is a 26.6 mas uniform disk squared visibility function (assuming ω = 100% unresolved flux), intended to guide the eye.

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