The CORALIE survey for southern extrasolar planets XVI. Discovery of a planetary system around HD 147018 and of two long period and massive planets orbiting HD 171238 and HD 204313
The CORALIE survey for southern extrasolar planets XVI. Discovery of a planetary system around HD 147018 and of two long period and massive planets orbiting HD 171238 and HD 204313
复制标题
CORALIE 南系外行星巡天 XVI。
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
A. Triaud
中科院分区：
文献类型：
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作者：
D. Ségransan;S. Udry;M. Mayor;D. Naef;F. Pepe;D. Queloz;Nuno C. Santos;B. Demory;P. Figueira;M. Gillon;M. Gillon;M. Marmier;Denis Mégevand;D. Sosnowska;O. Tamuz;A. Triaud
我们报告了在HD 140718周围探测到一个双行星系统，以及发现两个长周期大质量行星围绕HD 171238和HD 204313运行。这些发现是用安装在智利拉西拉天文台1.2米欧拉瑞士望远镜上的CORALIE Echelle摄谱仪完成的。环绕附近的G9矮行星HD 147018的行星系统由一颗偏心的内行星（e=0.47）组成，其质量是木星的两倍（2.1 MJup），轨道周期为44.24天。外行星的质量更大（6.6 MJup），轨道稍微偏心（e=0.13），周期为1008天。HD 171238的最小质量为2.6 MJup，周期为1523天，离心率为0.40。它的轨道是2.5 Au的G8矮星。最后一颗行星HD 204313 B，是一颗4.0兆的行星，周期为5.3年，离心率很低（e = 0：13）。它的轨道是一颗3.1 Au的G5矮星。这三颗母星都富含金属，这进一步加强了大质量行星倾向于在富含金属的恒星周围形成的情况。
We report the detection of a double planetary system around HD 140718 as well as the discovery of two long period and massive planets orbiting HD 171238 and HD 204313. Those discoveries were made with the CORALIE Echelle spectrograph mounted on the 1.2-m Euler Swiss telescope located at La Silla Observatory, Chile. The planetary system orbiting the nearby G9 dwarf HD 147018 is composed of an eccentric inner planet (e=0.47) with twice the mass of Jupiter (2.1 MJup) and with an orbital period of 44.24 days. The outer planet is even more massive (6.6 MJup) with a slightly eccentric orbit (e=0.13) and a period of 1008 days. The planet orbiting HD 171238 has a minimum mass of 2.6 MJup, a period of 1523 days and an eccentricity of 0.40. It orbits a G8 dwarfs at 2.5 AU. The last planet, HD 204313 b, is a 4.0 MJup-planet with a period of 5.3 years and has a low eccentricity (e = 0:13). It orbits a G5 dwarfs at 3.1 AU. The three parent stars are metal rich, which further strengthened the case that massive planets tend to form around metal rich stars.
DOI：
10.1088/0004-637x/708/1/625
发表时间：
2007-05
期刊：
The Astrophysical Journal
影响因子：
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作者：
J. Bean;B. Mcarthur;G. Benedict;T. Harrison;Dmitry;Bizyaev;E. Nelan;Verne V. Smith
通讯作者：
J. Bean;B. Mcarthur;G. Benedict;T. Harrison;Dmitry;Bizyaev;E. Nelan;Verne V. Smith