Radial profiles of g − r color (top) and stellar mass surface density, Σ_* (bottom), for each wedge direction in Malin 2. The horizontal dotted line in the bottom panel marks 1 M_⊙ pc⁻² stellar mass surface density, where we estimated the R₁ radius in the manner discussed in Sect. 3.4. The colored legends for the wedge profiles are the same as in Fig. 2. The dashed black line is the classical azimuthally averaged isophotal profile we measure, while the shaded gray region is its uncertainty.