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radial velocity

/ˈreɪdiəl vɪˈlɒsɪti/

1 entry

phrase

/ˈreɪdiəl vɪˈlɒsɪti/C1formalscientific
  • ruКомпонента скорости объекта (например, звезды или галактики) вдоль линии наблюдения, используемая в астрономии для измерения движения к Земле или от неё.

The component of velocity of an object (such as a star or galaxy) along the line of sight of an observer, used in astronomy to measure motion toward or away from Earth.

  1. Motion along the line of sightC2formal

    The velocity of an object along the line of sight of an observer, measured as the rate of change of distance between the object and the observer.

    ruЛучевая скорость

    • Astronomers measure the radial velocity of stars to detect exoplanets.
    • The radial velocity of the galaxy was calculated using the Doppler shift.
    • Changes in radial velocity indicate the presence of a binary companion.