Variable Polarization of WR~31a: Binary Companion or Co-Rotating Interaction Region?

Christiana Erba, Richard Ignace, Faith Simmons +1

WR 31a (Hen 3-519) is likely a post-luminous blue variable (LBV) star that is evolving to become a classical Wolf-Rayet star. Multicolor (UBVR) photopolarimetric observations of WR…