On the frequency of Jupiter analogs

Wittenmyer, R., Tinney, C.G., O'Toole, S., Jones, H.R.A., Butler, R.P., Carter, B.D. and Bailey, J. (2011) On the frequency of Jupiter analogs. The Astrophysical Journal, 727 (2). pp. 102-118. ISSN 0004-637X
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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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