The variability of the BRITE-est Wolf-Rayet binary, ${\gamma }^2$ Velorum I. Photometric and spectroscopic evidence for colliding winds

Noel D. Richardson, Christopher M. P. Russell, Lucas St-Jean +26

We report on the first multi-color precision light curve of the bright Wolf-Rayet binary ${\gamma }^2$ Velorum, obtained over six months with the nanosatellites in the BRITE- Constellation…