FREQUENCY ANALYSIS OF TWO-YEARS OBSERVATIONS OF RR LYRAE

A. V. Yushchenko, Yu. S. Romanov, N. D. Lemeshchenko, V. P. Murnikova

Анотація


2964 photoelectric observation of RR Lyrae were obtained at the Odessa observatory during two years: 1977 and 1978. Observations were transformed to standard BV photometric system and frequency-analyzed in the interval 0.08-700 days. A number of harmonics were detected. The main harmonic coincides with the well known photometric period (v0=1.764129), second harmonic ( vb=1.789093) is related with a period of Blazhko effect. There is a sequence of harmonics, which can be written by equation v=kv0 + vb where k=0,1,2,3,4. Two harmonics are connected with known periods of RR Lyrae: 123 days and four years.

Ключові слова


Stars; individual - Stars; pulsation - Stars; RR Lyrae

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Посилання


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DOI: https://doi.org/10.18524/1810-4215.1994.7.105780

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