On the irregular temporal behaviour of the variable star R Scuti

Abstract

We comment on the recent results of a temporal analysis of R Scuti, a star of RV Tauri type, presented by Buchler et al. As an alternative approach, we apply the technique of linear state space analysis to describe the irregular temporal behaviour with a linear stochastic process. We find evidence that the variability of R Scuti can be explained by the superposition of two stochastically driven damped oscillators.