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We present radial-velocity measurements obtained in a programs underway tosearch for extrasolar planets with the spectrograph SOPHIE at the 1.93-mtelescope of the Haute-Provence Observatory. Targets were selected fromcatalogs observed with ELODIE, mounted previously at the telescope, in order todetect long-period planets with an extended database close to 15 years. Two newJupiter-analog candidates are reported to orbit the bright stars HD150706 andHD222155 in 16.1 and 10.9 yr at 6.7 (+4.0,-1.4) and 5.1(+0.6,-0.7) AU and tohave minimum masses of 2.71 (+1.44,-0.66) and 1.90 (+0.67,-0.53) M_Jup,respectively. Using the measurements from ELODIE and SOPHIE, we refine theparameters of the long-period planets HD154345b and HD89307b, and publish thefirst reliable orbit for HD24040b. This last companion has a minimum mass of4.01 +/- 0.49 M_Jup orbiting its star in 10.0 yr at 4.92 +/- 0.38 AU. Moreover,the data provide evidence of a third bound object in the HD24040 system. With asurrounding dust debris disk, HD150706 is an active G0 dwarf for which wepartially corrected the effect of the stellar spot on the SOPHIEradial-velocities. HD222155 is an inactive G2V star. On the basis of theprevious findings of Lovis and collaborators and since no significantcorrelation between the radial-velocity variations and the activity index arefound in the SOPHIE data, these variations are not expected to be only due tostellar magnetic cycles. Finally, we discuss the main properties of this newpopulation of long-period Jupiter-mass planets, which for the moment, consistsof fewer than 20 candidates. These stars are preferential targets either fordirect-imaging or astrometry follow-up to constrain the system parameters andfor higher precision radial-velocity to search for lower mass planets, aimingto find a Solar System twin.

The SOPHIE search for northern extrasolar planets. V. Follow-up of ELODIE candidates: Jupiter-analogs around Sun-like stars