Microvariability in high-amplitude delta Scuti radially pulsating stars

Details Microvariability in high-amplitude delta Scuti radially pulsating stars Microvariability in high-amplitude delta Scuti radially pulsating stars

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.281..696g&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 281, Issue 2, pp. 696-702.

Astronomy and Astrophysics

Astronomy

31

Stars: Oscillations, Delta Scuti

Scientific paper

Analyses of existing data of high-amplitude delta Scuti stars (HADS) show that variability, at the mmag level, is a common phenomenon among them. Detailed period analyses show that, apart from the already known case of AI Vel, two other stars -SX Phe and DY Peg - are also pulsating with more radial and/or non-radial periods than usually believed. The phenomenon, only visible when high-quality observations are available, can be of considerable interest because of the tight constraints that this imposes on the theoretical models.

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