Overview

Delta Scuti star


Show Summary Details

Quick Reference

A type of pulsating variable with a short period (0.01–0.2 day) and small amplitude (0.003–0.9 mag.); abbr. DSCT. The pulsation is driven primarily by instabilities in the hydrogen convection zone, and multiple pulsation modes occur simultaneously. These Population I stars have spectral types from A0 to F5 and lie at the lower end of the Cepheid instability strip, either on the main sequence or among the subgiants and giants. In older literature, they were often described by the misleading terms dwarf Cepheid, RRs variable, or ultra-short-period variable. See also Ai Velorum Star; Sx Phoenicis Star.

Subjects: Astronomy and Astrophysics.


Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.