Using PCA and clustering on 131 Cepheid near-infrared light curves, the authors find that period, absolute magnitude, and amplitude correlate with the main principal components, while metallicity shows only marginal correlations, leading them to infer that mass dominates the light curve shape.
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Estimation of Classical Cepheid's Physical Parameters from NIR Light Curves
Using PCA and clustering on 131 Cepheid near-infrared light curves, the authors find that period, absolute magnitude, and amplitude correlate with the main principal components, while metallicity shows only marginal correlations, leading them to infer that mass dominates the light curve shape.