| Time-dependent Behaviour of the Low Amplitude δ Scuti Star HD 52788 |
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| 作者姓名： | Ai-Ying Zhou
National Astronomical Observatories Chinese Academy of Sciences Beijing |
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| 作者单位： | Ai-Ying Zhou
National Astronomical Observatories，Chinese Academy of Sciences，Beijing 100012; |
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| 基金项目： | Support by the National Natural Science Foundation of China. |
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| 摘 要： | 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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| 关 键 词： | 小波理论 恒星 数据分析 振动 |
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