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Fig. 2.
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Kernel density estimates (KDEs) of EW(Hα) vs. EW([OII]λ3727) for each group. Negative values indicate emission, and the data are shown on a symmetric logarithmic scale. To ensure that the distributions are depicted accurately, the KDE for Group 2 was limited to EW(Hα) < 10 Å, including ≥98% of the galaxies in this group.
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