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Four new planets orbiting somewhat metal-enriched stars

C. G. Tinney·R. Paul Butler·Geoffrey W. Marcy·Hugh R. A. Jones·Alan J. Penny·Chris McCarthy·Brad D. Carter·Jade Bond
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Abstract

We report the detection of four new extra-solar planets from the Anglo-Australian Planet Search orbiting the somewhat metal-enriched stars HD73526, HD76700, HD30177 and HD2039. The planetary companion of HD 76700 has a circular orbit with a period of 3.98d. With M sin i=0.197+-0.017 Mjup, or 0.69 times the mass of Saturn, is one of the lowest minimum mass extra-solar planets yet detected. The remaining planets all have elliptical orbits with periods ranging from 190.5d to 4.4yr. All four planets have been found orbiting stars from a sub-sample of twenty 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 October 1998. These stars were selected to be metal-enriched on the basis of their Stromgren photometry, and their enrichment has been subsequently confirmed by detailed spectroscopic analysis.

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C. G. Tinney, R. Paul Butler, Geoffrey W. Marcy, Hugh R. A. Jones, Alan J. Penny, Chris McCarthy, Brad D. Carter, Jade Bond. 2002-07-05. Four new planets orbiting somewhat metal-enriched stars. https://doi.org/10.1086/368068

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