HIP 79977 debris disk properties along the axis x. The individual points give parameters of the Moffat profile of the vertical cross section as shown in Fig. 5 and described in Sect. 4.2. From the top to the bottom: a) the profile peak SB_peak(x); b) FWHM; c) vertically integrated flux P(x); and d) spine distance from the disk major axis y₀. The vertically integrated profile flux P(x) is calculated as a mean surface brightness in a 0.1′′ × 1.8′′ bin. At separations smaller than x ≈ 0.2′′ the systematic uncertainties are increased and open circles mark the low S/N points. The vertical yellow line indicates the position of the star.