Search
Now showing items 1-9 of 9
A detailed analysis of the HD 73526 2:1 resonant planetary system
(2014-01-10)
We present six years of new radial velocity data from the Anglo-Australian and Magellan Telescopes on the HD 73526 2:1 resonant planetary system. We investigate both Keplerian and dynamical ( interacting) fits to these ...
Forever alone? : Testing single eccentric planetary systems for multiple companions
(2013-09)
Determining the orbital eccentricity of an extrasolar planet is critically important for understanding the system's dynamical environment and history. However, eccentricity is often poorly determined or entirely mischaracterized ...
Observing Strategies for the Detection of Jupiter Analogs
(2013-04)
To understand the frequency, and thus the formation and evolution, of planetary systems like our own solar system, it is critical to detect Jupiter-like planets in Jupiter-like orbits. For long-term radial-velocity monitoring, ...
Signals embedded in the radial velocity noise: Periodic variations in the tau Ceti velocities
(2013-03)
Context. The abilities of radial velocity exoplanet surveys to detect the lowest-mass extra-solar planets are currently limited by a combination of instrument precision, lack of data, and “jitter”. Jitter is a general term ...
The Anglo-Australian planet search. XXII : Two new multi-planet systems
(2012-07-10)
We report the detection of two new planets from the Anglo-Australian Planet Search. These planets orbit two stars each previously known to host one planet. The new planet orbiting HD 142 has a period of 6005 +/- 427 days, ...
On the frequency of Jupiter analogs
(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 ...
The frequency of low-mass exoplanets. II. The "Period Valley"
(2010)
Radial-velocity planet search campaigns are now beginning to detect low-mass "Super-Earth" planets, with minimum masses M sin i 10 M ⊕. Using two independently developed methods, we have derived detection limits from nearly ...
A long-period planet orbiting a nearby Sun-like star
(2010)
The Doppler wobble induced by the extra-solar planet HD 134987b was first detected by data from the Keck Telescope nearly a decade ago, and was subsequently confirmed by data from the Anglo-Australian Telescope (AAT). ...
A super-earth and two Neptunes orbiting the nearby sun-like star 61 Virginis
(2010)
We present precision radial velocity data that reveal a multiple exoplanet system orbiting the bright nearby G5V star 61 Virginis. Our 4.6 years of combined Keck/HIRES and Anglo-Australian Telescope precision radial ...