The CORALIE survey for southern extra-solar planets. X: A Hot Jupiter orbiting HD 73256
The CORALIE survey for southern extra-solar planets. X: A Hot Jupiter orbiting HD 73256
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DOI：
10.1051/0004-6361:20030815
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发表时间：
2003-04
影响因子：
6.5
通讯作者：
S. Udry;M. Mayor;J. Clausen;L. Freyhammer;B. Helt;C. Lovis;D. Naef;E. H. Olsen;F. Pepe;D. Queloz;N. C. S. G. Observatory;Geneva;Switzerland;Niels Bohr Institute for Astronomy;Copenhagen;Denmark;Royal Observatory of Belgium;Brussel;R Belgium;Observatorio Astronomico de Lisboa;Lisbon.;Portugal
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文献类型：
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作者：
S. Udry;M. Mayor;J. Clausen;L. Freyhammer;B. Helt;C. Lovis;D. Naef;E. H. Olsen;F. Pepe;D. Queloz;N. C. S. G. Observatory;Geneva;Switzerland;Niels Bohr Institute for Astronomy;Copenhagen;Denmark;Royal Observatory of Belgium;Brussel;R Belgium;Observatorio Astronomico de Lisboa;Lisbon.;Portugal
最近的径向速度测量获得的CORALIE光谱仪上的1.2米欧拉瑞士望远镜在拉西拉揭示了一个新的木星质量的热木星周围HD 73256的存在。这颗1.85- M的木星在一个极短周期（P = 2.5486 d）的准圆形轨道上运行。最好的开普勒轨道的解决方案，连同一个不成功的光度行星过境搜索进行的SAT丹麦望远镜在拉西拉。在观测的时间跨度，光度的后续行动的候选人，但揭示了一个$P \simeq 14$-d光度周期对应的旋转周期的星星。这种变化以及开普勒解周围的径向速度抖动被证明与HD 73256已知的公平活动水平有关。
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- 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 $P \simeq 14$-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 HD 73256.