Fig. 8
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Same as Fig. 7, but for sources with redshifts of z = 0.321 and z = 0.348. At these redshifts the [O III] λλ4959, 5007 doublet and the Hβ line are detected in the narrowband filter, generating an Hα excess. The spectra of the sources are from SDSS (top) and LAMOST (bottom) with IDs SDSS J231742.60+000535.1 and LAMOST J033429.44+000611.0, respectively.
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