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Abstract: The Anglo-Australian Planet Search has now accumulated 12 years ofradial-velocity data with long-term instrumental precision better than 3 m-s.In this paper, we expand on earlier simulation work, to probe the frequency ofnear-circular, long-period gas-giant planets residing at orbital distances of3-6 AU - the so-called -Jupiter analogs.- We present the first comprehensiveanalysis of the frequency of these objects based on radial-velocity data. Wefind 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 giantplanet between 3-6 AU.



Autor: Robert A. Wittenmyer, C.G. Tinney, Simon J. O'Toole, H.R.A. Jones, R.P. Butler, B.D. Carter, J. Bailey

Fuente: https://arxiv.org/







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