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Projected distance (in arcmin), from the BCG of the Fornax cluster NGC 1399, to the ETGs of our sample, as a function of their absolute r-band magnitude. Colour scale follows the calculated uncertainties in μPNLF for each galaxy. The r-band magnitudes are from Iodice et al. (2019a) except for FCC 119, FCC 249, and FCC 255, which we estimated to be 13.5, 12.1 and 12.2 mag respectively. This was obtained starting from the B-band magnitude reported in Sarzi et al. (2018) and by applying a colour-correction based on the spectral modelling of the integrated MUSE spectra for this target.
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