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| Paper: |
Reconstructing Cepheid Light Curves |
| Volume: |
167, Harmonizing Cosmic Distance Scales in a Post-Hipparcos Era |
| Page: |
192 |
| Authors: |
Hendry, M. A.; Tanvir, N. R.; Kanbur, S. M. |
| Abstract: |
In this paper, we describe a method for reconstructing multiwavelength Cepheid light curves based on principal component analysis. The technique can be applied to estimate mean I and V magnitudes, extinction corrections and true distance moduli from sparsely-sampled, noisy data. The method compares favourably with existing `template fitting' techniques, and in addition can be used as a robust estimator of the Cepheid period. We also discuss the use of light curve shape as an additional parameter to reduce the scatter of the PL relation. |
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