OUTBURST CYCLE LENGTH VARIATIONS iN THE DWARF NOVA EM CYGNI

Автор(и)

  • I. L Andronov Astronomical Observatory, Odessa State University, Ukraine
  • L. L. Chinarova Astronomical Observatory, Odessa State University, Ukraine

DOI:

https://doi.org/10.18524/1810-4215.1996.9.108832

Ключові слова:

Stars, Cataclysmic, Dwarf Novae, EM Cyg

Анотація

The cycle length of the dwarf nova EM Cyg undergoes season-to-season changes which may be interpreted by changes of the accretion rate caused by a solar-type activity of the secondary star. The mean brightness of EM Cyg varies with a cycle of ≈ 3000d and is highly  correlated with an amplitude of the sine-like variations. Unexpectedly no correlation was found between the seasonal values of the cycle length and the mean value or amplitude.

Посилання

Andronov l.L.: 1990, Kinematics and Physics of Celestial Bodies, 6, N 6, 87.

Andronov l.L.: 1991, Kinematics and Physics of Celestial Bodies, 7, N 2, 78.

Andronov l.L.: 1994, Odessa Astron. Publ., 7, 49.

Andronov l.L., Busch H., Sidorova I.A., Chinarova L.L.: 1993b, Preprint Ukr. Inst. Sci. Tech. Econ. Inform., N 409-Uk93, 32pp.

Andronov I.L., Sidorova I.A., Chinarova L.L.: 1993a, Prepriat Ukr. Inst. Sci. Tech. Econ. Inform. (Kiev), N 379-Uk93, 12pp.

Andronov I.L., Shakun L.L: 1990, Astrophys. Space Sci, 169, 237.

Bianchini A.: 1988, Inf. Bull. Var. Stars, 3136, 4pp.

Bianchini A.: 1990, A.J., 99, 1941.

Chinarova L.L.: 1995, in: Bull. Ukr. As. Ass., 7, 58.

Chinarova. L.L., Andronov LL: 1995, in: “Cataclysmic Variables“, ed. A.Biancini, M. Della Valle, M.Orio Ap. Sp. Sci. Lib., 205, 150.

Cook L.M.: 1987, J.AAVSO, 16, 2, 83.

Gicger A.: 1987, Acta Astron., 37, 1, 29.

Korn G.A., Korn T.M.: 1961, Mathematical Handbook for Scientists and Engineers, McGraw-Hill, N.Y.

Kukarkin B.V., Parenago P.P: 1934, Peremennye Zvezdy (Var. Stars), 4, 8, 251.

Kurochkin N.E.: 1981, Astron. Tsirc, 1169, 3.

Lin D.N.C., Papaloizou J., Faulkner J.: 1985, M.N.R.A.S., 212, 105.

Mattei J.A., Cook L.M., Piening A.T., Foster R.M.: 1986, J.AAVSO, 15, 3.

Meyer F., Meyer-Hofmeister E: 1984, As. Ap., 132, 143.

Priedhersky W., Holt S.S: 1987, Space Sci. Revs, 45, 291.

Richter G.A., Brauer H.J.: 1989, Astr. Nachr., 309, 6, 413.

Schweitzer E: 1996, flp://cdsarc.u-strasbg.fr/pub /afoev/cyg/em

Shakhovskoy N.M., Alexeev I.Yu., Andronov I.L., Kolesnikov S.V.: 1993, Ann. Israel. Phys. Soc, 10, 237.

Shakun L. I. : 1987a, Astron. Tsirk., 1513, 3.

Shakun L. I. : 1987b, Kinem. Phys. Celest. Bodies, 3, 5, 72.

Shakun L. I. : 1988, Astron. Tsirk., 1525, 9.

Shakun L. I. : 1989, Astron. Tsirk., 1540, 17.

Shakun L. I., Timke V.V.: 1994, Peremennye Zvezdy, 23, 4, 226.

Smak J. : 1984, P.A.S.P., 96, 575, 5.

Szkody P., Mattei J.: 1984, P.A.S.P., 96, 998.

Tremke J., Andronov I.L., Chinarova. L.L., Kumsiashvili M.l., Luthardt R., Pajdosz G., Patkós L., Rößiger S., Zola. S.: 1996, As.Ap. 312,121.

Vogt N.: 1982, Mitt. Astron. Ges, 57, 79.

##submission.downloads##

Опубліковано

2017-08-16

Номер

Розділ

Статті