• Corpus ID: 119081443

Prospects for the Detection of Earth-Mass Planets

  title={Prospects for the Detection of Earth-Mass Planets},
  author={Andrew P. Gould and B. Scott Gaudi and Cheongho Han},
  journal={arXiv: Astrophysics},
We compare potential state-of-the-art experiments for detecting Earth-mass planets around main-sequence stars using radial velocities, transits, astrometry, and microlensing. For conventionally-discussed signal-to-noise ratio (S/N) thresholds, S/N ~ 8, the last three methods are roughly comparable in terms of both the total number of planets detected and the mass distribution of their host stars. However we argue that S/N ~ 25 is a more conservative and realistic S/N threshold. We show… 
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