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CoRoT-18 b: Analysis of High-Precision Transit Light Curves with Starspot Features

Heras, A. M.; Gondoin, P.; Schmidt, T. O. B. +4 more

When a planet occults a spotty area on a stellar surface, the flux increases and a characteristic feature in a light curve - a bump - is observed. Among the planets detected by the CoRoT-mission CoRoT-18 is especially interesting as it exhibited spot crossings that we have analyzed in detail. We used four ground-based observations obtained at a 1.…