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Fig. 3
Normalized Hα intensity vs log (R ⋆ ) for our sample ETGs, based on isan determinations. The diagonal lines correspond to a power-law intensity drop-off of the form log (I/I0) ∝ − αlog (R ⋆ ), with α = 1. The right-hand side table lists the power-law slope α and the radially averaged EW(Hα) and τ for each ETG.
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