On the Frequency of Jupiter Analogs
Abstract
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 radial-velocity 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.
- Publication:
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The Astrophysical Journal
- Pub Date:
- February 2011
- DOI:
- 10.1088/0004-637X/727/2/102
- arXiv:
- arXiv:1011.4720
- Bibcode:
- 2011ApJ...727..102W
- Keywords:
-
- planetary systems;
- techniques: radial velocities;
- Astrophysics - Earth and Planetary Astrophysics
- E-Print:
- ApJ accepted