Extra-solar planets

  title={Extra-solar planets},
  author={Michael A. C. Perryman},
  journal={Reports on Progress in Physics},
  • M. Perryman
  • Published 2000
  • Physics
  • Reports on Progress in Physics
The discovery of the first extra-solar planet surrounding a main-sequence star was announced in 1995, based on very precise radial velocity (Doppler) measurements. A total of 34 such planets were known by the end of March 2000, and their numbers are growing steadily. The newly discovered systems confirm some of the features predicted by standard theories of star and planet formation, but systems with massive planets, having very small orbital radii and large eccentricities, are common and were… Expand
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