BRITE and Ground-based Photometry and Spectroscopy of the β Cephei Star ε Persei

Elżbieta Zocłońska and the BRITE Team

ε Persei was observed for a second time by the BRITE satellites from 9th September 2016 to 6th March 2017. We organized a ground-based spectroscopic campaign in order to determine the modes of pulsation and properties of the star simultaneously with the space photometry. The goal of our study is to find pulsation frequencies and amplitudes, to identify pulsation modes, to verify the orbital period and to find properties of ε Persei, i.e. core and envelope rotation, angular speed and exact evolution phase. First results are presented.

Proceedings of the Polish Astronomical Society, vol. 8, 94-98 (2018)

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