Fig. 3
Squared visibility of θ Cyg as a function of the spatial frequency [1/rad] for all data points recorded in 2010 and 2011 by VEGA (3T configuration). The solid line is the squared visibility function for a linear limb-darkened disk model with a diameter of 0.76 mas and a limb-darkening coefficient of 0.5, obtained with LITpro software.
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