Free Access

Fig. 8

image

Lomb-Scargle periodogram for the STELLA photometry (upper panel) and the HATnet photometry (lower panel). Horizontal dashed lines denote the power value of false-alarm probability (FAP) 0.01. Vertical dashed lines mark the period found by the sine fit. Middle panel: STELLA periodogram after one pre-whitening step. Significant frequencies remain, which we attribute to the sampling pattern and/or spot evolution.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.