Fig. 6
Expanded region of the Hβ line of the source SDSS133005.71+ 254243.7 (magenta line) which shows an extremely broad Hβ and at the same time very strong and broadened Fe II emission. Fit components: total flux (black line), starlight (blue line), power law (green dashed line), total line contribution (red line), and lower magenta shows the shape of the Fe II template d11-m10-20-5 broadened with a Gaussian of 2300 km s−1.
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