Poster abstract details

Roche tomography: Mapping stellar magnetic activity in close binaries

C.A. Hill, C.A. Watson, T. Shahbaz, D. Steeghs, V. S. Dhillon

Abstract

I will summarise my work using Roche tomography to map the surface of the secondary star in interacting binaries. I will outline the measurement of differential rotation on AE Aqr - the first ever measurement for a mass-transferring secondary in a CV. Furthermore, I will present a study of this star which explores its long-term magnetic activity. Finally, I will present the surface maps of the pre-CV QS Vir, showing a very active star with long-lived spot features.