The Extrasolar Planet ϵ Eridani b: Orbit and Mass

@article{Benedict2006TheEP,
  title={The Extrasolar Planet ϵ Eridani b: Orbit and Mass},
  author={G. Fritz Benedict and Barbara E. Mcarthur and George D. Gatewood and Edmund P. Nelan and William D. Cochran and A. P. Hatzes and Michael Endl and Robert A. Wittenmyer and Sallie L. Baliunas and G. A. H. Walker and Stephenson L. S. Yang and Martin K{\"u}rster and Sebastian G. Els and Diane Beverly Paulson},
  journal={The Astronomical Journal},
  year={2006},
  volume={132},
  pages={2206 - 2218}
}
Hubble Space Telescope (HST) observations of the nearby (3.22 pc) K2 V star ϵ Eridani have been combined with ground-based astrometric and radial velocity data to determine the mass of its known companion. We model the astrometric and radial velocity measurements simultaneously to obtain the parallax, proper motion, perturbation period, perturbation inclination, and perturbation size. Because of the long period of the companion, ϵ Eri b, we extend our astrometric coverage to a total of 14.94 yr… 
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