A Survey of Nebulae around Galactic Wolf-Rayet Stars in the Southern Sky. III. Survey Completion and Conclusions

摘要

We present the conclusion of a narrow-band optical CCD survey of Wolf-Rayet stars in the southern portion of the Milky Way. In this part of the survey we complete our survey of the southern Galaxy and report the detection of 10 new optical nebulae associated with Wolf-Rayet stars. This brings the final survey total to 40 Wolf-Rayet stars with associated nebulae in 114 southern Galactic fields for a 35/100 detection rate. Our results suggest that the Galactic environment has little apparent effect on the detection rate of nebulae associated with Wolf-Rayet stars. Indeed, a more important role in the pro- duction of nebulae is likely to be played by the evolution of the central star.