All Tables

Table 1: Journal of our spectroscopic observations of WR 20a. The first and second columns provide the heliocentric Julian date (in the format HJD - 2 450 000) and the orbital phase assuming a period of 3.675 days and adopting phase $\phi = 0.0$ as given in Table 2. The third column indicates whether the blue (B) or violet (V) spectral range was observed. The recentred and averaged primary and secondary radial velocities are given in Cols. 4 and 5 respectively (see text). Finally, the last column yields the weight that we assigned to the various RV data in the orbital solution.
Table 2: Orbital solution for WR 20a assuming a circular orbit and an orbital period of 3.675 days. T₀ refers to the time of conjunction with the primary being behind. $\gamma$ , K and $a~\sin{i}$ denote respectively the systemic velocity, the amplitude of the radial velocity curve and the projected separation between the centre of the star and the centre of mass of the binary system. $R_{\rm RL}$ stands for the radius of a sphere with a volume equal to that of the Roche lobe computed according to the formula of Eggleton (1983). All error bars indicate 1- $\sigma$ uncertainties.