Dust shell modeling of the SED and GRAVITY visibilities of 47 Tuc V3. Panel a: Comparison of the observed and model SEDs. The solid line represents the best-fiting model with τ_0.55 = 0.15 and an inner boundary temperature of 700 K. The red dots, green circles, blue diamonds, light blue triangle, and thick orange line represent the Gaia spectrum, 2MASS JHK_s photometric data, WISE photometric data, AKARI data, and Spitzer/IRS spectrum, respectively. Panel b: Comparison of the observed and model visibilities as a function of spatial frequency. The blue circles, black triangles, and red squares correspond to the visibilities measured at 2.1, 2.2, and 2.35 μm, respectively. The blue long-dashed line, black solid line (almost entirely overlapping with the long-dashed line), and red dotted line represent the model visibilities predicted at 2.1, 2.2, and 2.35 μm, respectively. The gray horizontal dotted line marks the visibility 1. Panels c–h: Comparison of the visibilities as a function of wavelength. In each panel, the red dots represent the observed data, while the black line represents the model.