Rotating ellipsoidal variable

Rotating ellipsoidal variable

Rotating ellipsoidal variables are a class of variable star. They are close binary systems whose components are ellipsoidal. They are not eclipsing, but fluctuations in apparent magnitude occur due to changes in the amount of light emitting area visible to the observer. Typical brightness fluctuations do not exceed 0.1 magnitudes.

The brightest rotating ellipsoidal variable is Spica (α Virginis).

References

Samus N.N., Durlevich O.V., et al. "Combined General Catalog of Variable Stars (GCVS4.2, 2004 Ed.)"


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Variable elipsoidal rotante — En astronomía se llaman variables elipsoidales rotantes (en inglés rotating ellipsoidal variables, abreviadas como ELL) a un tipo de estrellas variables. Son estrellas binarias cercanas cuyas componentes tienen forma elipsoidal. No son binarias… …   Wikipedia Español

  • Variable star — A star is classified as variable if its apparent brightness as seen from Earth changes over time, whether the changes are due to variations in the star s actual luminosity, or to variations in the amount of the star s light that is blocked from… …   Wikipedia

  • Cepheid variable — This article is about a class of pulsating stars. For the similarly named constellation, see Cepheus (constellation). Cepheids redirects here. For the fictional species, see Blind Alley . A Cepheid (  /ˈs …   Wikipedia

  • Semiregular variable star — Semiregular variable stars are giants or supergiants of intermediate and late spectral type showing considerable periodicity in their light changes, accompanied or sometimes interrupted by various irregularities. Periods lie in the range from 20… …   Wikipedia

  • Classical Cepheid variable — Classical Cepheids (also known as Population I Cepheids, Type I Cepheids, or Delta Cephei variables) are a type of Cepheid variable star. They are population I, variable stars that exhibit pulsation periods in the order of a few days to months,… …   Wikipedia

  • Mira variable — Mira variables (  /ˈmaɪr …   Wikipedia

  • RR Lyrae variable — RR Lyrae variables are periodic variable stars, commonly found in globular clusters, and often used as standard candles to measure galactic distances. This type of variable is named after the prototype, the variable star RR Lyrae in the… …   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

  • Orion variable — An Orion variable is a variable star which exhibits irregular and eruptive variations in its luminosity and is typically associated with diffuse nebulae. It is thought that these are young stars which will later become regular, non variable stars …   Wikipedia

  • Nu Centauri — ν Centauri Observation data Epoch J2000.0      Equinox J2000.0 Constellation Centaurus Right ascension 13h49m30.3s Declination −41°41′16″ …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”