Journal Article

Significance of periodogram peaks and a pulsation mode analysis of the Beta Cephei star V403 Car

F. A. M. Frescura, C. A. Engelbrecht and B. S. Frank

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 388, issue 4, pages 1693-1707
Published in print August 2008 | ISSN: 0035-8711
Published online August 2008 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2008.13499.x
Significance of periodogram peaks and a pulsation mode analysis of the Beta Cephei star V403 Car

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We discuss some commonly used methods for determining the significance of peaks in the periodograms of time series. We review methods for constructing the classical significance tests, their corresponding false alarm probability functions and the role played in these by independent random variables and by empirical and theoretical cumulative distribution functions. We discuss the concepts of independent frequencies and oversampling in periodogram analysis. We then compare the results of new Monte Carlo simulations for evenly spaced time series with results obtained previously by other authors, and present the results of Monte Carlo simulations for a specific unevenly spaced time series obtained for V403 Car.

Keywords: methods: data analysis; methods: statistical; stars: oscillations

Journal Article.  12340 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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