Fig. 3
Normalized spectra of the nine Of-type stars. The left panel depicts the medium resolution spectra in the blue (setting: LR02 and LR03). The high resolution spectra in the red (setting: HR15N) are shown in the right panelwhich includes Hα line. The central emission in Hα and the [O iii], [N ii], and [S ii] lines are from nebular emission (neb).
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