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... > Stellar astronomy > Stellar types > Chemically peculiar stars > Magnetic stars > Magnetic variable stars > Rapidly oscillating Ap star
... > Stellar astronomy > Stellar types > Variable stars > Intrinsic variable stars > Magnetic variable stars > Rapidly oscillating Ap star
Stellar astronomy > Stellar types > Chemically peculiar stars > Ap stars > Rapidly oscillating Ap star
... > Stellar astronomy > Stellar types > Stellar spectral types > A stars > Ap stars > Rapidly oscillating Ap star
... > Stellar astronomy > Stellar types > Early-type stars > A stars > Ap stars > Rapidly oscillating Ap star

Preferred term

Rapidly oscillating Ap star  

Definition

  • A chemically peculiar star characterized by the presence of high-frequency non-radial oscillations, with periods that range between about 4 and 16 min. These variations have periods from about 5 to 20 minutes and low amplitudes (B < 10 mmag). They are consistent with acoustic (p mode) pulsations of low degree and high radial overtone. (en)

Broader concept

Entry terms

  • Alpha2 Canum Venaticorum stars (en)
  • Alpha2 CVn stars (en)
  • roAp stars (en)

Contributor

Editorial note

URI

http://astrothesaurus.org/uat/27

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