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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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Short "hint"

the component of the motion of a star away from or toward the earth along its line of sight, expressed in miles or kilometers per second and determined by the shift in the wavelength of light emitted by the star

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Usage examples (16)
  • If the plane of the orbit of the system is very nearly along the line of sight, this provides the most ideal situation for attempting to detect planets using the...
  • One of the most successful ways of detecting extrasolar planets is the radial-velocity method.
  • This is what will make it easy for radial-velocity measurements to tell a transiting planet from a binary star.
  • Indeed, all of the candidate planets found by Kepler will be subject to confirmation through radial-velocity studies.
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