"20-MIN" OSCILLATIONS OF THE CATACLYSMIC VARIABLE TT ARI

Автор(и)

  • J. Tremko Astronomical Institut of the Slovak Academy of Sciences, 059-60 Tatranska Lomnica, Slovakia, Slovakia
  • I. L. Andronov Department of Astronomy, Odessa State University, T.G.Shevchenko Park, 270014 Odessa, Ukraine, Ukraine
  • L. L. Chinarova Department of Astronomy, Odessa State University, T.G.Shevchenko Park, 270014 Odessa, Ukraine, Ukraine
  • M. I. Kumsiashvili Mount Kanobili Astrophysical Observatory, Georgian Academy of Sciences, 383762 Abastumani, Georgia, Georgia
  • R. Luthardt Sonneberg Observatory, PSF 55-27/28, O-6400 Sonneberg, Germany, Germany
  • G. Pajdosz Astronomical Observatory, Pedagogical University ul.Podchorazych 2, 30-084 Krakow, Poland, Poland
  • L. Patkos Konkoly Observatory, P.O.Box 67, H 1525 Budapest, Hungary, Hungary
  • S. Robiger Sonneberg Observatory, PSF 55-27/28, O-6400 Sonneberg, Germany, Germany
  • S. Zola Astronomical Observatory, Pedagogical University ul.Podchorazych 2, 30-084 Krakow, Poland; Astronomical Observatory, Jagiellonian University ul.Orla 171, 30-244 Krakow, Poland, Poland

DOI:

https://doi.org/10.18524/1810-4215.1994.7.105793

Ключові слова:

Stars, Cataclysmic Variables, QPOs, TT Ari.

Анотація

Results based on 16 nights in B, 3 in UBV and 1 in UBVRI are presented. Periodograms for detrended nightly runs showed significant peaks at different frequences from 28 to 103 c/d. Most prominent of them correspond to the best fit periods 23.7, 15.2, 27.5 and 51.6 min. Characteristics of the peaks are listed in tables. It seems that in TT Ari we observe contributions of several mechanisms of instability with similar time scales rather than a single QPO with secular decrease of the cycle.

Посилання

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Опубліковано

2017-07-01

Номер

Том 7 (1994)

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Відповідно Закону України про авторське право і суміжні права N 3792-XII від 23 грудня 1993 року