Fig. 6.
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Histograms of (from left to right and top to bottom) the logarithm of the sSFRs; the EWs of Hα, Hβ, and [O III]λ5007; and the flux ratios of [O III]λλ4363,5007/[O II]λ3727 of the samples of Cardamone et al. (2009) (green dashed-dotted line), Izotov et al. (2011) (red dotted line), Yang et al. (2017) (blue dashed line), the SFGs of HECATE (gray line), and the spectroscopic subsample of this work’s BBs (purple continuum line).
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