Amplitude Modulation of Short Timescale Variability
Lauren I. Biddle, Joe Llama, Andrew Collier Cameron, Lisa A. Prato, M. Jardine, C. M. Johns-Krull · Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun · 2021
Variability of Classical T Tauri Systems occurs over a range of timescales. A common source of this variability is caused by accretion shocks, which can hamper the detectability of young planets within these systems, further motivating the characterization of accretion signatures. We present analysis of small-amplitude photometric variability in the K2 lightcurve of CI Tau occurring on timescales of ≲1 d. Our findings reveal that the amplitude of this stochastic variability exhibits the same periodic signatures as detected in the large-amplitude variability, indicating that the physical mechanism modulating these brightness features is the same.