HD 80606 b, a planet on an extremely elongated orbit

HD 80606 b, a planet on an extremely elongated orbit
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HD 80606 b,一颗轨道极长的行星

DOI:
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发表时间:
2001
期刊:
影响因子:
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通讯作者:
S. Zucker
S. Zucker
中科院分区:
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文献类型:
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作者:
D. Naef;D. Latham;M. Mayor;T. Mazeh;J. Beuzit;G. Drukier;C. Perrier;D. Queloz;J. Sivan;G. Torres;S. Udry;S. Zucker

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我们报告探测到一颗行星伴星围绕太阳型星星HD 80606运行,HD 80606是一颗宽双星中较亮的组成部分,预计距离约为2000 Au。使用高信号光谱观测的两个组成部分的视觉二进制,我们表明,他们几乎是相同的。该行星的轨道周期为111.8天,最小质量为3.9 M_Jup。这颗行星的轨道偏心率为0.927,是迄今为止发现的太阳系外行星中轨道偏心率最高的。最后,我们列出了几个过程,这种极端的偏心率可能会导致。
We report the detection of a planetary companion orbiting the solar-type star HD 80606, the brighter component of a wide binary with a projected separation of about 2000 AU. Using high-signal spectroscopic observations of the two components of the visual binary, we show that they are nearly identical. The planet has an orbital period of 111.8 days and a minimum mass of 3.9 M_Jup. With e=0.927, this planet has the highest orbital eccentricity among the extrasolar planets detected so far. We finally list several processes this extreme eccentricity could result from.