III. Three planetary candidates detected with ELODIE
Observatoire de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
2 Laboratoire d'Astrophysique, Observatoire de Grenoble, Université J. Fourier, BP 53, 38041 Grenoble, France
3 Observatoire de Haute-Provence, 04870 St-Michel L'Observatoire, France
Corresponding author: D. Naef, Dominique.Naef@obs.unige.ch
Accepted: 10 October 2003
We present our ELODIE radial-velocity measurements of HD 74156 and 14 Her (HD 145675). These stars exhibit low-amplitude radial-velocity variations induced by the presence of low-mass companions. The radial-velocity data of HD 74156 reveal the presence of two planetary companions: a 1.86 MJup planet on a 51.64–d orbit and a 6.2 MJup planet on a long-period (5.5 yr) orbit. Both orbits are fairly eccentric (e = 0.64 and 0.58). The 4.7 MJup companion to 14 Her has a long period (4.9 yr) and a moderately eccentric orbit (e = 0.34). We detect an additional linear radial-velocity trend superimposed on the periodic signal for this star. We also compute updated orbital solutions for HD 209458 and 51 Peg (HD 217014). Finally, we present our ELODIE radial-velocity data and orbital solutions for 5 stars known to host planetary companions: Ups And (HD 9826), 55 Cnc (HD 75732), 47 UMa (HD 95128), 70 Vir (HD 117176) and HD 187123. We confirm the previously published orbital solutions for Ups And, 70 Vir and HD 187123. Our data are not sufficient to fully confirm the orbital solutions for 55 Cnc and 47 UMa.
Key words: techniques: radial velocities / planetary systems
Based on observations made with the ELODIE echelle spectrograph mounted on the 1.93–m Telescope at the Observatoire de Haute-Provence (CNRS) and with the CORALIE echelle spectrograph mounted on the 1.2–m Euler Swiss Telescope at ESO–La Silla Observatory.
© ESO, 2004