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A remarkable change of the spectrum of the magnetic Of?p star HD 148937 reveals evidence of an eccentric, high-mass binary

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Figure

Figure 1. Left - Illustration of the telluric-corrected line profiles of He i λ5876 of HD 148937 prior to 2011
Table 1. Visible spectroscopy of HD 148937 employed in this investigation and measurements of the heliocentric radial velocities of the N iii/ C iii  emis-sion line complex at ∼ 4640 Å and the C iv absorption lines at 5801/11 Å.
Figure 2. The black (solid and dashed) profiles show the range of variability of each spectral line in the ESPaDOnS dataset of Wade et al
Table 2. Orbital solution computed from the λ4640 and λ5800 RVs.
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