期刊
ASTRONOMY & ASTROPHYSICS
卷 407, 期 2, 页码 679-684出版社
E D P SCIENCES
DOI: 10.1051/0004-6361:20030815
关键词
techniques : radial velocities; techniques : photometric; stars : binaries : spectroscopic; stars : individual : HD 73256; stars : activity; stars : planetary systems
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 HD73256. The 1.85-M-Jup 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 P similar or equal to 14-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 HD73256.
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