SIMBAD references

Combined with previous information (orbital period P= 9.5550 d and inclination {img}), new optical spectroscopic data lead to improved circular orbits for this WR + O system, with mass 13.4 M_☉ of the WN5o star and 23.9 M_☉ of its O8.5V companion. These are normal for their spectral types. The WR/O mass ratio, q ≃ 0.56, is reasonable for such a binary. The relatively large orbital separation between the two components ( ∼ 63 R_☉) implies that there is currently no interaction between the two stars beyond their colliding winds. Analysis of the excess line emission and absorption arising in the wind-wind collision zone yields the following parameters: streaming velocity v_strm= 1104 km/s, cone opening half-angle θ ≃ 59° and Coriolis angle shift {img}. Using probable values of mass-loss rate and terminal wind velocity for each star, a value of θ ≃ 37° is obtained. The difference in θ is likely due to a combination of uncertainty in these parameters and radiative braking. Altogether, WR127 is a normal, detached and non-photospherically eclipsing binary system, although it does show atmospheric `eclipses'.