Phased RV plot for WR 137. Archival RV measurements are shown in blue and are taken from Lefèvre et al. (2005). The RV measurements from HERMES using the strong C IV lines are shown in red. Along with these measurements, the inset shows the short cadence measurements with the full spectrum (green) and weak He II lines (purple). All HERMES RV measurements have been shifted by −23.5 km s⁻¹ in order to convert relative RV measurements to absolute values.