A planet in a circular orbit with a 6 year period

被引：30

作者：

Carter, BD ^{[1
]}

Butler, RP

Tinney, CG

Jones, HRA

Marcy, GW

McCarthy, C

Fischer, DA

Penny, AJ

机构：

[1] Univ So Queensland, Fac Sci, Toowoomba, Qld 4350, Australia

[2] Carnegie Inst Sci, Dept Terr Magnetism, Washington, DC 20015 USA

[3] Anglo Australian Observ, Epping, NSW 1710, Australia

[4] Liverpool John Moores Univ, Astrophys Res Inst, Wirral CH41 1LD, Cheshire, England

[5] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[6] San Francisco State Univ, Dept Phys & Astron, San Francisco, CA 94132 USA

[7] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

来源：

ASTROPHYSICAL JOURNAL | 2003年 / 593卷 / 01期

关键词：

planetary systems; stars : individual (HD 70642);

D O I：

10.1086/378185

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Precision Doppler velocity measurements from the 3.9 m Anglo-Australian Telescope reveal a planet with a 6 yr period orbiting the G5 dwarf HD 70642. The a = 3.3 AU orbit has a low eccentricity (e = 0.1), and the minimum (M sin i) mass of the planet is 2.0M(JUP). The host star is metal-rich relative to the Sun, similar to most stars with known planets. The distant and approximately circular orbit of this planet makes it a member of the rarest group to emerge from precision Doppler surveys.

引用

页码：L43 / L46

页数：4

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