radial pulsations

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• radial — radial, iale, iaux [ radjal, jo ] adj. et n. f. • av. 1478; du lat. radius 1 ♦ Anat. Qui a rapport au radius ou à la partie de l avant bras correspondant au radius. Nerf radial : branche postérieure du plexus brachial. Artère radiale. 2 ♦ (1898)… …   Encyclopédie Universelle

• Pouls radial — Pouls Mesure de pouls au poignet Le pouls est la perception du flux sanguin pulsé par le cœur par la palpation d une artère. Sommaire 1 Prise de pouls …   Wikipédia en Français

• Naine blanche à pulsations — Une naine blanche à pulsations est une étoile naine blanche à la luminosité variable du fait de pulsations d ondes de gravité non radiales dans sa partie interne. Les types connus de naines blanches à pulsations comprennent les étoiles DAV, ou ZZ …   Wikipédia en Français

• High Accuracy Radial Velocity Planet Searcher — The High Accuracy Radial velocity Planet Searcher (HARPS) is a high precision echelle spectrograph installed in 2002 on ESO s 3.6m telescope at La Silla Observatory, with first light achieved February 2003. It is a second generation radial… …   Wikipedia

• Delta Scuti variable — A Delta Scuti variable (sometimes termed dwarf cepheid) is a variable star which exhibits variations in its luminosity due to both radial and non radial pulsations of the star s surface. Typical brightness fluctuations are from 0.003 to 0.9… …   Wikipedia

• Alpha Cygni variable — Alpha Cygni variables are variable stars which exhibit non radial pulsations. They are supergiant stars of spectral types B or A. Variations in brightness on the order of 0.1 magnitudes are associated with the radial pulsations, which often seem… …   Wikipedia

• G29-38 — Artist s impression of G29 38 and its debris disk Observation data Epoch J2000.0      Equinox J2000.0 (ICRS) …   Wikipedia

• Pi Herculis — Constelación Hércules Ascensión recta α 17h 15min 02,83s Declinación δ +36º 48’ 33,0’’ Distancia …   Wikipedia Español

• RS Chamaeleontis — Constelación Chamaeleon Ascensión recta α 08h 43min 12,22s Declinación δ 79º 04’ 12,3’’ Distancia …   Wikipedia Español

• RV Tauri variable — RV Tauri variables are supergiant variable stars. They exhibit changes in luminosity which are tied to radial pulsations of their surfaces. Their changes in brightness are also correlated with changes in their spectral type. While at their… …   Wikipedia

• Gamma Doradus variable — Gamma Doradus variables are variable stars which display variations in luminosity due to non radial pulsations of their surface. The stars are typically young, early F or late A type main sequence stars, and typical brightness fluctuations are… …   Wikipedia