Elodie metallicity-biased search for transiting Hot Jupiters IV. Intermediate period planets orbiting the stars HD43691 and HD132406

R. da Silva (1) , S. Udry (1) , F. Bouchy (2) , C. Moutou (3) , M. Mayor (1) , J. -L. Beuzit (4) , X. Bonfils (4) , X. Delfosse (4) , M. Desort (4) , T. Forveille (4) , F. Galland (4) , G. Hebrard (2) , A. -M. Lagrange (4) , B. Loeillet (3) , C. Lovis (1) , F. Pepe (1) , C. Perrier (4) , F. Pont (1) , D. Queloz (1) , N. C. Santos (1, 5) , D. Segransan (1) , J. -P. Sivan (3) , A. Vidal-Madjar (2) , S. Zucker

1 ObsGE - Observatoire Astronomique de l'Université de Genève
2 IAP - Institut d'Astrophysique de Paris
3 LAM - Laboratoire d'Astrophysique de Marseille
4 LAOG - Laboratoire d'Astrophysique de Grenoble
5 CAAUL - Centro de Astronomia e Astrofísica da Universidade de Lisboa

We report here the discovery of two planet candidates as a result of our planet-search programme biased in favour of high-metallicity stars, using the ELODIE spectrograph at the Observatoire de Haute Provence. One of them has a minimum mass m_2\sin{i} = 2.5 M_Jup and is orbiting the metal-rich star HD43691 with period P = 40 days and eccentricity e = 0.14. The other planet has a minimum mass m_2\sin{i} = 5.6 M_Jup and orbits the slightly metal-rich star HD132406 with period P = 974 days and eccentricity e = 0.34. Both stars were followed up with additional observations using the new SOPHIE spectrograph that replaces the ELODIE instrument, allowing an improved orbital solution for the systems.

Mots clés: 43691; stars: individual: HD  132406; planetary systems; techniques: radial velocities

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]; Astrophysique [astro-ph]

R. da Silva, S. Udry, F. Bouchy, C. Moutou, M. Mayor, et al.. Elodie metallicity-biased search for transiting Hot Jupiters IV. Intermediate period planets orbiting the stars HD43691 and HD132406. Astronomy and Astrophysics - A&A, 2007, 473, pp.323-328. ⟨10.1051/0004-6361:20077314⟩. ⟨hal-00189538⟩