Fig. 6
Narrow FWHM(Hβ) extreme of the 4DE1 continuum, populated by NLS1 galaxies which follow the same trends as AGN in general. Abscissa is the strength of Fe II compared to the broad Hβ, and ordinate is the FWHM(Hβ). The flux density of [O III] is shown in colour; bluer colour indicates lower flux density and redder colour higher flux density.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.