Four new planets orbiting metal-enriched stars

被引：50

作者：

Tinney, CG

Butler, RP

Marcy, GW

Jones, HRA

Penny, AJ

McCarthy, C

Carter, BD

Bond, J

机构：

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

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

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

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

[5] Liverpool John Moores Univ, Astrophys Res Inst, Birkenhead CH41 1LD, Merseyside, England

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

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

[8] Univ Sydney, Sch Phys, Sydney, NSW 2000, Australia

来源：

ASTROPHYSICAL JOURNAL | 2003年 / 587卷 / 01期

关键词：

planetary systems; stars; individual; (HD; 2039; HD; 30177; 73526; 76700);

D O I：

10.1086/368068

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the detection of four new extrasolar planets from the Anglo-Australian Planet Search orbiting the metal-enriched stars HD 73526, HD 76700, HD 30177, and HD 2039. The planetary companion of HD 76700 has a circular orbit with a period of 3.98 days. With M sin i = (0.197 +/- 0.017) M-J, or 0.69M(SAT), it is one of the lowest minimum mass extrasolar planets yet detected. The remaining planets all have elliptical orbits with periods ranging from 190.5 days to 4.4 yr. All four planets have been found orbiting hosts from a subsample of 20 metal-enriched and faint (V < 9) stars, which was added to the Anglo-Australian Planet Search's magnitude-limited V < 7.5 main sample in 1999 October. These stars were selected for metal enrichment on the basis of their Stromgren photometry, and their enrichment has been subsequently confirmed by detailed spectroscopic analysis.

引用

页码：423 / 428

页数：6

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