Issue |
A&A
Volume 407, Number 2, August IV 2003
|
|
---|---|---|
Page(s) | 679 - 684 | |
Section | Stellar structure and evolution | |
DOI | https://doi.org/10.1051/0004-6361:20030815 | |
Published online | 17 November 2003 |
The CORALIE survey for southern extra-solar planets*
X. A Hot Jupiter orbiting HD 73256
1
Observatoire de Genève, 51 ch. des Maillettes, 1290 Sauverny, Switzerland
2
Niels Bohr Institute for Astronomy, Physics and Geophysics; Astronomical Observatory, Juliane Maries Vej 30, 2100 Copenhagen Ø, Denmark
3
Royal Observatory of Belgium, Ringlaan 3, 1180 Brussel and Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
4
Centro de Astronomia e Astrofísica da Universidade de Lisboa, Observatório Astronómico de Lisboa, Tapada da Ajuda, 1349-018 Lisboa, Portugal
Corresponding author: S. Udry, stephane.udry@obs.unige.ch
Received:
14
April
2003
Accepted:
27
May
2003
Recent radial-velocity measurements obtained with the
CORALIE spectrograph on the 1.2-m Euler Swiss
telescope at La Silla unveil the presence of a new Jovian-mass Hot
Jupiter around HD 73256. The 1.85-MJup
planet moves on an extremely short-period (P = 2.5486 d),
quasi-circular orbit. The best Keplerian orbital solution is
presented together with an unsuccessful photometric
planetary-transit search performed with the SAT Danish telescope at
La Silla. Over the time span of the observations, the photometric
follow-up of the candidate has nevertheless revealed a
-d photometric periodicity corresponding to the
rotational period of the star. This variation as well as the
radial-velocity jitter around the Keplerian solution are shown to be
related to the fair activity level known for HD 73256.
Key words: techniques: radial velocities / techniques: photometric / stars: binaries: spectroscopic / stars: individual: HD 73256 / stars: activity / stars: planetary systems
© ESO, 2003
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