Fig. 10.
K-mean clustering of the spectral profiles of the inset of Fig. 9a. Each contour delimits the area where the profiles are closer to the corresponding coloured average profile. The upper image has reversed intensity and the intensity scales of the last four panels are in units of 10−7 erg cm−2 s−1 Hz−1 ster−1. The Y-axes have different scales.
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