Natural light spectra for Mrk 1044 (top row), SDSS J080101.41+184840.7 (middle row), and IRAS 04416+1215 (bottom row). Top row: normalized 6dF spectrum of Mrk 1044 from Jones et al. (2009) with the fitted Hβ (left) and Hα (middle) part. The right plot shows the normalized unpolarized spectrum obtained with FORS2/VLT. The middle and lower rows show as follows for SDSS J080101.41+184840.7 and IRAS 04416+1215, respectively: fitted Hβ and Hα part from SDSS normalized archival spectrum and normalized unpolarized spectrum obtained with FORS2/VLT. Data are marked in gray, and the model is marked in black. The fit components are given in the following: for Hβ (left panel), the Hβ BC and [O III] semi-broad component doublet are red. The NCs of the Hβ and [OIII] doublet are black. The Hβ blue component is marked in blue. The power-law component is marked in blue, and the Fe II pseudo continuum is green. For Hα (middle and right panel), the Hα NC and [NII] and [SII] doublets are marked in black. The Hα BC is marked as red. The Hα blue component is marked in blue, the Fe II pseudo continuum is marked in green, and the power-law component is marked in blue. The lower panels of each plot correspond to the residuals, in radial velocity units km s⁻¹. All spectra are normalized to Hα intensity.