Paper:	Period Search For Variable Stars
Volume:	451, 9th Pacific Rim Conference on Stellar Astrophysics
Page:	143
Authors:	Chang, D. C.; Negow, C. C.; Chen, W. P.
Abstract:	Period is one of the most important quantities in the variable stars' research. Various methods exist in literature to search for period for a given variable star, such as Lomb-Scargle periodogram, Phase Dispersion Minimization, SigSpec, and others. When applying these methods, we have incorporated the calculation of Nyquist frequency – a key parameter needed to be determined from data. We compared these period search methods by using various pulsating stars with known periods given in the OGLE-III database, and found that SigSpec gave the highest success rate. We also combined measurements taken in VI bands, in contrast to the conventional approach that periods are searched using single band data, to improve the accuracy of the searched periods.

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