University of Hertfordshire

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From the same journal

By the same authors

On the frequency of Jupiter analogs

Research output: Contribution to journalArticle


  • R. Wittenmyer
  • C.G. Tinney
  • S. O'Toole
  • H.R.A. Jones
  • R.P. Butler
  • B.D. Carter
  • J. Bailey
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Original languageEnglish
Pages (from-to)102-118
JournalThe Astrophysical Journal
Publication statusPublished - 2011


The Anglo-Australian Planet Search has now accumulated 12 years of radial-velocity data with long-term instrumental precision better than 3 m s-1. In this paper, we expand on earlier simulation work, to probe the frequency of near-circular, long-period gas-giant planets residing at orbital distances of 3-6 AU-the so-called Jupiter analogs. We present the first comprehensive analysis of the frequency of these objects based on radialvelocity data. We find that 3.3% of stars in our sample host Jupiter analogs; detailed, star-by-star simulations show that no more than 37% of stars host a giant planet between 3 and 6 AU.


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