Open Access
Fig. 15.
Spectral stacks for objects classified as type 1 AGN. A zoom on the Hβ spectral region is presented. The stacks are divided by their median flux to ease comparison. Stacks are taken in bins along the vertical EV1 sequence Sulentic et al. (2002) with the emission line from Vanden Berk et al. (2001) marked.
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