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positive radial velocity

См. также в других словарях:

  • 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 …   Wikipedia

  • Velocity — In physics, velocity is defined as the rate of change of position. It is a vector physical quantity; both speed and direction are required to define it. In the SI (metric) system, it is measured in meters per second: (m/s) or ms 1. The scalar… …   Wikipedia

  • Space velocity — The space velocity of an astronomical object is its actual motion relative to the Sun or the Local standard of rest.AstrometryIts components in the Galactic coordinate system are usually designated U, V, and W, given in km/s, with U positive in… …   Wikipedia

  • Doppler effect — Change of wavelength caused by motion of the source. An animation illustrating how the Doppler effect causes a car engine or siren to soun …   Wikipedia

  • Alpha Centauri — This article is about α Centauri . For a Centauri , see V761 Centauri. For A Centauri , see A Centauri. For other uses, see Alpha Centauri (disambiguation). Alpha Centauri A[1]/B[2] …   Wikipedia

  • Redshift — This article is about the astronomical phenomenon. For other uses, see Redshift (disambiguation). Physical cosmology …   Wikipedia

  • Tau Ceti — Starbox begin name=Tau Ceti Starbox image caption=Tau Ceti (highlighted center) in the southern part of the constellation Cetus. Starbox observe epoch=J2000 constell=Cetus ra=RA|01|44|04.0829cite web url=http://simbad3.u strasbg.fr/sim… …   Wikipedia

  • Cyclonic separation — A simple cyclone separator Cyclonic separation is a method of removing particulates from an air, gas or liquid stream, without the use of filters, through vortex separation. Rotational effects and gravity are used to separate mixtures of solids… …   Wikipedia

  • Milky Way Galaxy — Large spiral galaxy (roughly 150,000 light years in diameter) that contains Earth s solar system. It includes the multitude of stars whose light is seen as the Milky Way, the irregular luminous band that encircles the sky defining the plane of… …   Universalium

  • Stellar kinematics — is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful… …   Wikipedia

  • star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… …   Universalium


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