Fig. 7
Time evolution model of the chromospheric activity of Sun-like stars on the main sequence compared with the median chromospheric activity indices of the Sun and solar-type dwarfs in Upper Sco (age ~ 5 Myr), β Pic (~12 Myr), Upper Cen-Lup (~16 Myr), Lower Cen Cru (~16 Myr), α Per (~85 Myr), the Pleiades (~130 Myr), UMa (~500 Myr), the Hyades (~625 Myr), and M67 (~4000 Myr) compiled by Mamajek & Hillenbrand (2008). The value of the chromospheric activity index 
of CoRoT 102899501 is indicated with a black circle.
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