Definition from Wikipedia

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Definition from Wikipedia - scientific work related to Wikipedia quality published in 2008, written by flo.

Overview

Radial velocity is the velocity of an object in the direction of the line of sight (i.e. its speed straight towards you, or away from you). The light of an object with a substantial radial velocity will be subject to Doppler effect, so the frequency of the light decreases for receding objects (redshift) and increases for approaching objects (blueshift). The radial velocity of a star or other luminous but distant objects can be measured accurately by taking a high-resolution spectrum and (...)

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