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Figure 1:
Normalized flux of the CoRoT-Exo-2 star, showing a low frequency modulation due to the presence of spots on the stellar surface, and the 78 transits used to build the phase-folded transit of the Fig. 2. For clarity purposes, data have been combined in 64-points bins (![]() |
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Figure 2: Normalized and phase folded light curve of 78 transits of CoRoT-Exo-2b ( top), and the residuals from the best-fit model ( bottom). The bin size corresponds to 2.5 min, and the 1-sigma error bars have been estimated from the dispersion of the points inside each bin. The residuals of the in-transit points are larger due to the effect of successive planet occultations of stellar active regions. |
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Figure 3: Phase folded radial velocity measurements of CoRoT-Exo-2, together with the final fitted semi-amplitude (K) and the applied offsets between the instruments. Filled circles: SOPHIE, open circles: HARPS, open triangles: CORALIE. In the bottom panel, the total span of the CCF bisectors, as measured in the HARPS spectra. |
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