Talk

Different ways of measuring stellar rotation in photometric time series

Christoffer Karoff, Aarhus University

Stellar rotation can be measured in photometric time series through a number of different methods, such as periodogram analysis, autocorrelation analysis, asteroseismology and forward modelling of the time series. These methods all have different strengths and weaknesses and differences in the obtained results can rise from both phenomena that are intrinsic to the stars, like differential rotation and phenomena that are not. In order to be able to compare results from different methods it is thus important to be aware of these strengths and weakness.