Extended Data Figure 2: Surface brightness profile of NGC 1600.
From: A 17-billion-solar-mass black hole in a group galaxy with a diffuse core
a, The circularized surface brightness distribution of NGC 1600 (filled circles) and the best-fit core-Sérsic model (red line; the best-fit parameters of the core-Sérsic function are quoted). The blue dotted line indicates the inward extrapolation of the outer Sérsic component. From the integrated difference between the blue and the red curves, we derive a ‘light deficit’ of Ldef = 9.47 × 109L⊙. b, The difference between the data points in panel a and the core-Sérsic fit. Surface brightnesses are given in mag arcsec−2 in the R-band.
