UW CMa: A Questionable Contact System

UW CMa: A Questionable Contact System

Herbert Pablo, Noel D. Richardson, Anthony F. J. Moffat, the BEST and SASER

Using BRITE and SMEI photometry in conjunction with concurrent spectroscopy we attempt a thorough analysis of the O supergiant binary UW CMa. We explore and confirm previously noted asymmetries in the light curve which we are unable to model effectively. We also find the presence of an unexplained frequency at twice that of the orbit. We then discuss the state of the binary and whether or not this system is truly in contact.

Proceedings of the Polish Astronomical Society, vol. 8, 101-105 (2018)

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