Four New Planets Orbiting Metal‐enriched Stars | Zendy

C. G. Tinney | Zendy; R. Paul Butler | Zendy; Geoffrey W. Marcy | Zendy; H. R. A. Jones | Zendy; A. J. Penny | Zendy; C. McCarthy | Zendy; Brad Carter | Zendy; J. C. Bond | Zendy

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Four New Planets Orbiting Metal‐enriched Stars

Author(s) -

C. G. Tinney,

R. Paul Butler,

Geoffrey W. Marcy,

H. R. A. Jones,

A. J. Penny,

C. McCarthy,

Brad Carter,

J. C. Bond

Publication year - 2003

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/368068

Subject(s) - planet , exoplanet , physics , stars , photometry (optics) , astronomy , astrophysics , planetary system , terrestrial planet , orbit (dynamics) , astrobiology , engineering , aerospace engineering

We report the detection of four new extra-solar planets from theAnglo-Australian Planet Search orbiting the somewhat metal-enriched starsHD73526, HD76700, HD30177 and HD2039. The planetary companion of HD 76700 has acircular orbit with a period of 3.98d. With M sin i=0.197+-0.017 Mjup, or 0.69times the mass of Saturn, is one of the lowest minimum mass extra-solar planetsyet detected. The remaining planets all have elliptical orbits with periodsranging from 190.5d to 4.4yr. All four planets have been found orbiting starsfrom a sub-sample of twenty metal-enriched and faint (V<9) stars, which wasadded to the Anglo-Australian Planet Search's magnitude-limited V$<$7.5 mainsample in October 1998. These stars were selected to be metal-enriched on thebasis of their Stromgren photometry, and their enrichment has been subsequentlyconfirmed by detailed spectroscopic analysis.Comment: 10 pages, 5 figures and 5 table

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