Time-dependent Behaviour of the Low Amplitude δ Scuti Star HD 52788

Details Time-dependent Behaviour of the Low Amplitude δ Scuti Star HD 52788 Time-dependent Behaviour of the Low Amplitude δ Scuti Star HD 52788

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004chjaa...4..335z&link_type=abstract

Chinese Journal of Astronomy & Astrophysics, Vol. 4, p. 335-342

Astronomy and Astrophysics

Astrophysics

Methods: Data Analysis, Stars: Oscillations, Δ Scuti, Stars: Individual (Hd 52788)

Scientific paper

Wavelet transform is applied to reanalyze the low amplitude δ Scuti star HD 52788, which exhibits complex light variations with uncertain frequency solutions. We gain an insight into the strong instability of pulsation present in the star. Based on an estimate of the star's physical parameters, its evolutionary status is determined. An attempt of asteroseismic modelling failed to predict the observed dense frequencies. Because of its varying pulsation spectrum, HD 52788 is a distinctive and very interesting object among δ Sct stars for testing current models of stellar evolution and pulsation.

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