Title: Short-term spot evolution

Author: L. Hambalek, AISAS

Abstract:
Kepler light curves provide so-far unprecedented sets of continuous
photometry that can reveal physical changes on the order of hours over the
course of several days. We have found several weak-lined T Tauri stars
that were observed by K2 mission and used the data for estimation of
rotation period derived from photospheric spots. We looked further at the
changes of this period within 80-day long time-series.