Stellar surface brightness profile of NGC 5128. This figure shows a comparison between the best-fit MGE model for the surface brightness (red) with the 2MASS Large Galaxy Atlas surface brightness profile (blue) Jarrett et al. (2003), literature MGE model of NGC 5128 (dashed black line) by Häring-Neumayer et al. (2006), and the outer halo profiles in the V-band by Dufour et al. (1979) and Rejkuba et al. (2022) (green and yellow respectively), assuming a V − Ks = 3 mag. The blue horizontal dashed line represents the 2MASS surface brightness 1σ noise level used to derived the most inner part of the MGE model. The vertical bands show the radius at which we use the 2MASS K-band image, the de Vaucouleurs-Sérsic profile by Dufour et al. (1979) and Rejkuba et al. (2022) respectively to derive the MGE model shown in red.