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... > Stellar astronomy > Stellar types > Variable stars > Intrinsic variable stars > Pulsating variable stars > Delta Scuti variable stars
... > Stellar astronomy > Stellar types > Variable stars > Intrinsic variable stars > Pulsating variable stars > Multi-periodic variable stars > Delta Scuti variable stars
... > Stellar astronomy > Stellar types > Variable stars > Periodic variable stars > Multi-periodic variable stars > Delta Scuti variable stars
... > Stellar astronomy > Stellar types > Variable stars > Periodic variable stars > Short period variable stars > Delta Scuti variable stars

Preferred term

Delta Scuti variable stars  

Definition

  • A member of a class of pulsating stars with periods less than 0.3 days, spectral types A or F, and visual light amplitudes in the range from a few thousands of a magnitude to about 0.8 mag. On the H-R diagram, δ Scuti stars form a group which lies in an instability strip which includes the classical Cepheids at its brightest end and the pulsating white dwarfs at its faintest limit. These stars can show very complex light variations since, while some of them are pulsating in one radial mode only, others may be pulsating simultaneously in several radial and non-radial modes. (en)

Broader concept

Entry terms

  • Al Velorum stars (en)
  • Delta Scuti variables (en)
  • Dwarf Cepheids (en)

Contributor

Editorial note

URI

http://astrothesaurus.org/uat/370

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