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A&A 414, 351-359 (2004)
DOI: 10.1051/0004-6361:20034091
The ELODIE survey for northern extra-solar planets
III. Three planetary candidates detected with ELODIE
D. Naef1, M. Mayor1, J. L. Beuzit2, C. Perrier2, D. Queloz1, J. P. Sivan3 and S. Udry11 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
(Received 18 July 2003 / Accepted 10 October 2003 )
Abstract
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
planet on a 51.64-d orbit and a
6.2
planet on a long-period (
5.5 yr) orbit. Both orbits are fairly eccentric
(
e = 0.64 and 0.58).
The 4.7
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
Offprint request: D. Naef, Dominique.Naef@obs.unige.ch
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