(MULTI-) FREQUENCY VARIATIONS OF STARS. SOME METHODS AND RESULTS
DOI:
https://doi.org/10.18524/1810-4215.1994.7.105709Ключові слова:
Data reduction, Stars, binary, multiple, pulsatingАнотація
Some algorithms and programs are described for determining the parameters of processes with constant and variable periods. Those are: FOUR-1 periodogram analysis by using the least squares one-harmonic fit, FOUR-N corresponds to a number of harmonics, FOUR-T to a sine wave with a linear trend, FOUR-M to a number of waves with independent frequencies. Multishif-ted and mean weighted periodograms are discussed. PERMIN allows the determination of a best fit period from the moments of "characteristic events" only. The programs allows one to determine not only the parameters, but accuracy estimates and the " false alarm" probability as well. Some applications of these and some other methods to variable stars of different types are discussed.Посилання
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