Comparison between the observed (left) and the best-fit model (middle) images for Sz 71. Residuals are shown in the right panel. The best-fit model has the following parameters γ = 0.25 ± 0.01, Σ0 = (16.2 ± 0.2)g/cm2,Rc = (85 ± 1)au. The three images have been produced by applying the CLEAN deconvolution algorithm with natural weighting to the observed, best-fit model and residual visibilities, respectively. Contour levels refer to –3 (dashed), 3, 6, 12, 24, 48, 50, 100, 150, etc. multiple of the rms, which here is σ = 0.3 mJy/beam. The FWHM of the synthesized beam is shown as a gray ellipse in the left panel.
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