The HARPS search for southern extra-solar planets. XVII. Super-Earth and Neptune-mass planets in m

@article{Bouchy2008TheHS,
  title={The HARPS search for southern extra-solar planets. XVII. Super-Earth and Neptune-mass planets in m},
  author={F. Bouchy and M. Mayor and C. Lovis and S. Udry and W. Benz and J. Bertaux and X. Delfosse and C. Mordasini and F. Pepe and D. Queloz and D. S'egransan},
  journal={Astronomy and Astrophysics},
  year={2008}
}
We report on the detection of two new multiple planet systems orbiting solar-like stars HD 47 186 and HD 181 433. The first system contains a hot Neptune of 22.78 M⊕ with a 4.08-day period and a Saturn of 0.35 MJUP with a 3.7-year period. The second system contains a Super-Earth of 7.5 M⊕ with a 9.4-day period, a 0.64 MJUP with a 2.6-year period, and a third companion of 0.54 MJUP with a period of about 6 years. These detections increase to 20 the number of close-in low-mass exoplanets (below 0… Expand
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