The HARPS search for southern extra-solar planets XLII. A system of Earth-mass planets around the nearby M dwarf YZ Ceti

  title={The HARPS search for southern extra-solar planets XLII. A system of Earth-mass planets around the nearby M dwarf YZ Ceti},
  author={N. Astudillo-Defru and R. D'iaz and X. Bonfils and J. M. Almenara and J. Delisle and F. Bouchy and X. Delfosse and T. Forveille and C. Lovis and M. Mayor and F. Murgas and F. Pepe and N. Santos and D. S'egransan and S. Udry and A. Wunsche},
  journal={arXiv: Earth and Planetary Astrophysics},
  • N. Astudillo-Defru, R. D'iaz, +13 authors A. Wunsche
  • Published 2017
  • Physics
  • arXiv: Earth and Planetary Astrophysics
  • Exoplanet surveys have shown that systems with multiple low-mass planets on compact orbits are common. Except for few cases, however, the masses of these planets are generally unknown. At the very end of the main sequence, host stars have the lowest mass and hence offer the largest reflect motion for a given planet. In that context, we monitored the low-mass (0.13Msun) M dwarf YZ Cet (GJ 54.1, HIP 5643) intensively and obtained both radial velocities and stellar-activity indicators derived from… CONTINUE READING
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