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Fig. 1


ETGs in the sample of Kormendy et al. (2009). MIR classes are colour coded (black = class 0; yellow = class 1; green = class 2; and red = class 4. Nebular lines in the spectra are indicated with vertical red solid lines. PAH complexes are indicated with dotted areas. H2 rotational emission lines are indicated with black solid lines.

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