Ten New and Updated Multiplanet Systems and a Survey of Exoplanetary Systems

@article{Wright2009TenNA,
  title={Ten New and Updated Multiplanet Systems and a Survey of Exoplanetary Systems},
  author={J. T. Wright and Shailesh Upadhyay and Geoffrey W. Marcy and Debra A. Fischer and Eric B. Ford and John Asher Johnson},
  journal={The Astrophysical Journal},
  year={2009},
  volume={693},
  pages={1084-1099}
}
We present the latest velocities for ten multiplanet systems, including a re-analysis of archival Keck and Lick data, resulting in improved velocities that supersede our previously published measurements. We derive updated orbital fits for 10 Lick and Keck systems, including two systems (HD 11964, HD 183263) for which we provide confirmation of second planets only tentatively identified elsewhere, and two others (HD 187123 and HD 217107) for which we provide a major revision of the outer planet… Expand
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References

SHOWING 1-10 OF 86 REFERENCES
Detection of a Third Planet in the HD 74156 System Using the Hobby-Eberly Telescope
We report the discovery of a third planetary-mass companion to the G0 star HD 74156. High-precision radial velocity measurements made with the Hobby-Eberly Telescope aided the detection of thisExpand
THE SUCCESSFUL PREDICTION OF THE EXTRASOLAR PLANET HD 74156d
Most of the first-discovered extrasolar multiplanet systems were found to lie close to dynamically unstable configurations. However, a few observed multiplanet systems (e.g., HD 74156) did not showExpand
Four New Exoplanets and Hints of Additional Substellar Companions to Exoplanet Host Stars
We present four new exoplanets: HIP 14810b and HIP 14810c, HD 154345b, and HD 187123c. The two planets orbiting HIP 14810, from the N2K project, have masses of 3.9 and 0.76 M_J. We have searched theExpand
Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems
We present results of a reconnaissance for stellar companions to all 131 radial velocity-detected candidate extrasolar planetary systems known as of 2005 July 1. Common proper-motion companions wereExpand
Five New Extrasolar Planets
We report multiple Doppler measurements of five nearby FGK main-sequence stars and subgiants obtained during the past 4-6 yr at the Keck Observatory. These stars, namely, HD 183263, HD 117207, HDExpand
Long-Period Objects in the Extrasolar Planetary Systems 47 Ursae Majoris and 14 Herculis*
The possible existence of additional long-period planetary-mass objects in the extrasolar planetary systems 47 UMa and 14 Her is investigated. We combine all available radial velocity data on theseExpand
PLANET-PLANET SCATTERING IN PLANETESIMAL DISKS
We study the final architecture of planetary systems that evolve under the combined effects of planet-planet and planetesimal scattering. Using N-body simulations we investigate the dynamics ofExpand
Catalog of nearby exoplanets
We present a catalog of nearby exoplanets. It contains the 172 known low-mass companions with orbits established through radial velocity and transit measurements around stars within 200 pc. WeExpand
A Third Planet Orbiting HIP 14810
We present new precision radial velocities and a three-planet Keplerian orbit fit for the V = 8.5, G5 V star HIP 14810. We began observing this star at Keck Observatory as part of the N2K PlanetExpand
Retired A Stars and Their Companions: Exoplanets Orbiting Three Intermediate-Mass Subgiants
We report precision Doppler measurements of three intermediate-mass subgiants obtained at Lick and Keck Observatories. All three stars show variability in their radial velocities consistent withExpand
...
1
2
3
4
5
...