Fig. 4.
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Example spectra of galaxies. The upper panel shows a possible star-forming galaxy, while the bottom panel shows a likely passive galaxy. The red dashed lines (left to right) show the [OII] emision line (3727.5 Å), calcium K (3933.7 Å), calcium H (3968.5 Å), and Hδ (4101.7 Å). The grey shadings correspond to regions used for D4000 calculation (Balogh et al. 1999).
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