Fig. 2.
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H7 and H8 line profiles (light blue; light red: three-bin moving average). Clear asymmetries in both lines preclude single-Gaussian fits. The fit (black line) is the sum of narrow and broad components (NC, dashed blue; BC, red), and might also show Fe I 3887.05 Å or Cr I 3887.08 Å emission. The velocity zero-point is set to the rest-frame wavelength of the H I emission line.
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