Fig. 1
Unscaled sketch of the unified model of AGN, taken from Marin (2016). The cartoon shows that AGN with narrow and broad Balmer emission lines (type 1, i = 0− 60∘ ) and those with only narrow lines (type 2, i = 60− 90∘) derive fromthe same morphology, but are viewed from different angles with respect to the AGN axis. This is the original basis of the unified model.
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