Sections of the HIRES spectrum of the B3e star BD+65°1637 centered near Hα (left) and Hβ (right). Strong Hα emission (﹩W=-﹩25 Å) is apparent with wings extending beyond ± 550 km s⁻¹. There is no indication of an underlying photospheric absorption profile. The emission line is double-peaked, and the radial velocities of the red and blue peaks are annotated in the figure. Hβ reveals a similar double-peaked emission structure, but is substantially weaker (﹩W=-﹩2.4 Å) and reveals the wings of a broad photospheric absorption profile.