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WAVELET ANALYSIS OF SMALL-AMPLITUDE PULSATING RED GIANTS

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John R. Percy

Ryan Kastrukoff

Erindale Campus, and

Department of Astronomy

University of Toronto

Mississauga, ON L5L 1C6

Canada

Presented at the 90th Spring Meeting of the AAVSO, May 5, 2001

Abstract

We have investigated the usefulness of wavelet analysis for studying the changing period and amplitude of small-amplitude pulsating red giants. Specifically, we have applied it to EU Del, W Boo, and SX UMi. With care, this method can provide useful information about variables with amplitudes between 0.2 and one magnitude, especially if used in conjunction with light curves, Fourier analysis, and autocorrelation analysis.

Link to ADS abstract, article and citation information