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We present the detection and characterization of the two new transiting,close-in, giant extrasolar planets KOI-200b and KOI-889b. They were firstidentified by the Kepler team as promising candidates from photometry of theKepler satellite, then we established their planetary nature thanks to theradial velocity follow-up jointly secured with the spectrographs SOPHIE andHARPS-N. Combined analyses of the whole datasets allow the two planetarysystems to be characterized. The planet KOI-200b has mass and radius of 0.68+/- 0.09 M_Jup and 1.32 +/- 0.14 R_Jup; it orbits in 7.34 days a F8V host starwith mass and radius of 1.40 (+0.14/-0.11) M_Sun and 1.51 +/- 0.14 R_Sun.KOI-889b is a massive planet with mass and radius of 9.9 +/- 0.5 M_Jup and 1.03+/- 0.06 R_Jup; it orbits in 8.88 days an active G8V star with a rotationperiod of 19.2 +/- 0.3 days, and mass and radius of 0.88 +/- 0.06 M_Sun and0.88 +/- 0.04 R_Sun. Both planets lie on eccentric orbits and are located justat the frontier between regimes where the tides can explain circularization andwhere tidal effects are negligible. The two planets are among the first onesdetected and characterized thanks to observations secured with HARPS-N, the newspectrograph recently mounted at the Telescopio Nazionale Galileo. Theseresults illustrate the benefits that could be obtained from joint studies usingtwo spectrographs as SOPHIE and HARPS-N.

KOI-200b and KOI-889b: two transiting exoplanets detected and characterized with Kepler, SOPHIE and HARPS-N