DOI: https://doi.org/10.18524/1810-4215.1996.9.109017

PERIOD CHANGE IN THE CONTACT SYSTEM AW UMA

T. Pribulla, D. Chochol

Анотація


Nine new minima were determined from the UBV photoelectric observations obtained in 1992 and 1995-6. They were used to derive the new ephemerides of AW UMa. The mid-eclipse brightening best visible in U colour was detected. Possible reasons of the observed orbital period decrease are discussed.


Ключові слова


Stars; eclipsing binaries; AW UMa

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Посилання


Bakos G.A., Herák T.B., Tremko J. 1991, Bull. Astron. Inst. Czechosl., 42, 331

Demircan O., Derman E., Műyesseroğlu Z. 1992 Astron. Astrophys., 263, 165

Derman E., Demircan O., Műyesseroğlu Z. 1991, IB VS, No. 3540; 1

Dworak T.Z., Kurpinska M. 1975 Acta Astron, 25, 417

Hrivnak B.J. 1982 Astrophys, J, 260, 744

Istomin L.F., Orlov L.M., Kulagin V.V. 1981, Perem, zv., 21, 583

Kalish M.S. 1965 Publ. Astron. Soc. Pac., 77, 36

Paczynski B. 1964 Astron. J., 69, 124

Rucinski S.M. 1992 Astron. J., 104, 1968

Woodward E.J., Koch R.H., Eisenhardt P.R. 1980, Astron. J., 85, 59




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