First results from the Anglo-Australian Planet Search: A brown dwarf candidate and a 51 peg-like planet

被引：128

作者：

Tinney, CG

Butler, RP

Marcy, GW

Jones, HRA

Penny, AJ

Vogt, SS

Apps, K

Henry, GW

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 Calif Santa Cruz, Univ Calif Observ, Lick Observ, Santa Cruz, CA 95064 USA

[8] Univ Sussex, Brighton BN1 9QJ, E Sussex, England

[9] Tennessee State Univ, Ctr Excellence Informat Syst, Nashville, TN 37203 USA

来源：

ASTROPHYSICAL JOURNAL | 2001年 / 551卷 / 01期

基金：

美国国家科学基金会;

关键词：

planetary systems; stars; individual; (HD; 164427; HD; 179949); low-mass; brown dwarfs;

D O I：

10.1086/320097

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report results from the Anglo-Australian Planet Search, a survey for planets around 200 solar-type stars in the southern hemisphere that is being carried out on the 3.9 m Anglo-Australian Telescope. Limiting Doppler precisions of 3 m s(-1) have been demonstrated from the first 2.5 years of operation, making this the highest-precision planet search in the southern hemisphere. From these data we report results for two new substellar detections. The first is a 51 Peg-like planet around the star HD 179949 with M sin i = 0.84 M-JUP. Photometric study reveals this is not a transiting system. The second is a brown dwarf or very low mass star companion to HD 164427 in an eccentric orbit with Msin i = 46 M-JUP. Hipparcos data indicate this latter object is unlikely to have a mass greater than 0.18 M..

引用

页码：507 / 511

页数：5

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