Fig. 5.
RV measurements for WR 137 during the short cadence study. At the bottom of the plot are the values of (σw, σRV) (km s−1) for each mask. It is observed that the helium lines (and weak lines in general) have large dispersions. The masks least affected by wind variability are “full spec”, “C4 strong”, “C4 moderate”, and “C4 all” (determined by their values of σw).
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