HR2 vs. Balmer velocity width of elusive AGN. A total of 19 sources (blue symbols) do not show clear signs of absorption and have broader line widths; they are NLS1 candidates (broad sub-sample). The remaining 22 sources with narrower line widths (red symbols; narrow sub-sample) show different properties, only 41% of them exhibit clear signs of absorption. The size of the typical (mean) errors is indicated by the black error-bars shown in the top right of the diagram.
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