Balmer vs. forbidden line widths for the unobscured NL AGN. The black line is the equality line, while the two dashed grey lines correspond to an error of 15%. The sources with noisy spectra and/or weak emission-lines and thus having an unreliable fit are shown by yellow symbols. The sources with observed weak broad wings for the Balmer lines are labelled in magenta. Finally the AGN which we classified as NLS1 (44 sources) are shown by open red triangles.
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