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radial velocity |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.06 sec. |
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radial velocity, in astronomy, the speed with which a star moves toward or away from the sun. It is determined from the red or blue shift in the star's spectrum spectrum, arrangement or display of light or other form of radiation separated according to wavelength, frequency, energy, or some other property. Beams of charged particles can be separated into a spectrum according to mass in a mass spectrometer (see mass ..... Click the link for more information. . |
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| This would include a more aggressive documentation of near-surface divergence signatures and their peak radial velocity values. Called the High-Accuracy Radial Velocity Planet Searcher (HARPS), this instrument is one of several that detected the least-massive extrasolar planet now known, an orb about 14 times Earth's mass. The system provides quantitative reflectivity/precipitation information on weather targets within 240 nautical miles (480 KM) of the radar antenna and also provides quantitative mean radial velocity and spectral width (turbulence) information on weather targets within 60 nautical miles (120 KM) of the radar antenna. |
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radial velocity
