CYCLE LENGTH CHANGES OF THE SRd VARIABLE UU HER?

Автор(и)

  • A. I. Pikhun Astronomical Observatory, Odessa State University, T.G.Shevchenko Park, Odessa 270014 Ukraine, Україна
  • I. L. Andronov Astronomical Observatory, Odessa State University, T.G.Shevchenko Park, Odessa 270014 Ukraine, Україна

DOI:

https://doi.org/10.18524/1810-4215.1994.7.105776

Ключові слова:

Stars, Semiregular, UU Her

Анотація

Best fit periods for individual seasons show variations from 27d to 101d with a possible cycle ≈ 5500d. One - and multi- frequency sine approximations of 650 photovisual observations argue for a formal 2 component model with periods P1 = 44.92 ± .06d, P2 = 70.37 ± .16d and semi-amplitudes r1 = 0.093 ± .010m, r2 = 0.086 ±.009m.

Посилання

Andronov I.L.: 1994, Odessa As. PubL, 7, 49.

Beyer M.: 1948, Erg. A, N., 11, N 4.

Kholopov P.N. (ed.): 1985, General Catalogue of variable stars, 2, Moscow, Nauka.

Latyshev I.N.: 1966, Astrofizika, 2, 355.

Fedotov Yu.T.: 1987, Peremennye Zvezdy, 22, N 4, 557.

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2017-07-01

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