Free Access

Fig. 6.

image

Amplitude of solar cycle brightness change as defined in Fig. 2. Orange solid line: solar case (M/H = 0.0); black solid line: hypothetical Sun calculated with M/H = 0.3 using solar atmosphere models; black dotted line: same as before, but using atmospheric models consistently recalculated with M/H = 0.3, i.e. the back-reaction of the radiation field on the atmospheric structure, and continuum opacity change due to a different electron concentration are considered. The yellow and grey shaded areas are the same as in Fig. 2.

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.