Azimuthally medianed (one pixel wide annular zones) surface brightness profiles derived from the HST/ACS scattered light images after deprojection (for details see Sect. 4.3). Note that the F606W radial brightness profile is reliable only for ρ > 60 AU and the F814W image is reliable only for ρ > 100 AU (dashed, vertical lines). An additional error of  ≈5% due to uncertainties in stellar PSF subtraction is not included in the plotted error bars. The stellar flux densities are 5.9 ± 0.3   Jy and 6.9 ± 0.3   Jy at the F606W and F814W wavebands (Ardila et al. 2004). The black, solid lines represent the profiles derived from our final model of the disk (Sect. 4). The albedo of our employed astronomical silicate grains (Sect. 4.1.2) is 0.56 and 0.57 at λ = 0.6 μm and λ = 0.8 μm, respectively, for the smallest (2.5 μm) grains dominating the scattering.