Fig. 4
Top panel: continuum-normalized spectrum of CoRoT 102899501 (solid line) in the Ca ii H and K region observed on 2010 Oct. 10. The spectral template of the non-active star broadened at the v sin i of the target and Doppler-shifted according to the RV difference is overplotted with a dotted line. Bottom panels: difference spectrum where the Hϵ emission is emphasized.
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