Free Access

Fig. 1

thumbnail

Illustration of the four steps of the processing of observations at high spectral resolution in an absorption line. These data correspond to η Cet observed in the Ca II/854 nm line. Top: raw differential visibility with the simple model. Middle: normalized visibility in the sliding narrow spectral band. Bottom: calibrated visibility in the sliding narrow spectral band.

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.