An extensive spectral analysis is performed on the light curve of dwarf nova V455 Andromedae (V455 And = HS 2331+3905) using the Least-squares WAVElet software (LSWAVE) to highlight its robustness for analyzing astronomical time series. The V455 And properties are briefly reviewed, and the recent results are compared with the results obtained herein. It is shown that the new analytical tools are superior to the traditional ones in that they consider observational uncertainties, do not require any interpolation and/or gap-filling, and can estimate the spectral peaks at a higher time–frequency resolution. First, the Anti-leakage Least-squares Spectral Analysis (ALLSSA) is applied to analyze a V455 And unequally spaced time series since 2008. ALLSSA has estimated spectral peaks at 80.40, 40.54, 1.12, and 0.56 minutes that correspond to the orbital period, its first harmonic, the white dwarf spin period, and its harmonic, respectively, confirming the earlier results. ALLSSA is then ...

中文翻译：

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V455 Andromedae时间序列的最小二乘光谱和小波分析：超爆发后的寿命

使用最小二乘WAVElet软件（LSWAVE）对矮新星V455 Andromedae（V455 And = HS 2331 + 3905）的光曲线进行了广泛的光谱分析，以突出其用于分析天文时间序列的鲁棒性。简要回顾了V455和属性，并将最新结果与此处获得的结果进行了比较。结果表明，新的分析工具优于传统分析工具，因为它们考虑了观测不确定性，不需要任何插值和/或间隙填充，并且可以在较高的时频分辨率下估计光谱峰。首先，自2008年以来，采用了抗泄漏最小二乘频谱分析（ALLSSA）来分析V455和不等间隔的时间序列。ALLSSA估计的光谱峰值为80.40、40.54、1.12和0。分别对应于轨道周期，一次谐波，白矮星自旋周期及其谐波的56分钟，证实了较早的结果。那么ALLSSA是...