Abstract
UBV photometric observations of the active binary star CG Cygnus have been presented and analyzed to obtain absolute parameters of both components. Updated O-C diagram analysis by Kalimeris method yielded the values of 1.55×10−6 day and 1.4×10−7 day as the amplitudes of orbital period modulation, and P mod1 ∼ 52.3 yr and P mod2 ∼ 15.9 yr as the modulation periodicities. Finally, the consequences of period changes have been discussed on the basis of Applegate mechanism.
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References
Afsar, M., Heckert, P.A., Ibanoglu, C.: A&A 420, 595–604 (2004)
Applegate, J.H.: AJ 385, 621–629 (1992)
Beckert, D., Cox, D., Gordon, S., Ledlow, M., Zeilik, M.: IBVS No. 3398 (1989)
Bedford, D.K., Dapergolas, A., Kontizas, E., Kontizas, M.: IBVS No. 3322 (1989)
Dapergolas, A., Kontizas, E., Kontizas, M.: IBVS No. 3609 (1991)
Hall, D.S., Kreiner, J.M.: Acta Astron. 30, 387 (1980)
Hall, D.S.: ApJ 380, L85 (1991)
Herkert, P.A.: IBVS No. 4127 (1994)
Herkert, P.A.: IBVS No. 4627 (1998)
Jassur, D.M.Z.: Ap&SS 67, 191 (1980)
Kalimeris, A., Livaniou-Rovithis, H., Rovithis, P.: A&A 282, 775 (1994)
Kjurkchieva, D.P., Marchev, D.V., Ogloza, W.: A&A 400, 623–631 (2003)
Milone, E., Ziebarth, K.: PASP 86, 684 (1974)
Milone, E., Castle, K., Robb, R., Hall, D.S., Zissell, R.: AJ 84, 417 (1979)
Naftilan, S., Grillmair, C., Trager, G.: AJ 92, 210 (1987)
Sowell, J.R., Wilson, J.W., Hall, D.S., Peyman, P.E.: PAPS 99, 407 (1986)
Wiliams, A.: MNRAS 82, 300 (1992)
Yü, C.: ApJ 58, 75 (1923)
Zeilik, M., Elston, R., Henson, G., Schmolke, P., Smith, P.: IBVS No. 2090 (1982)
Zeilik, M., Cox, D., DeBlasi, C., Rhodes, M., Budding, E.: ApJ 345, 991 (1989)
Zeilik, M., Heckert, P., Ledlow, M. et al.: IBVS No. 3663 (1991)
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Jassur, D.M.Z., Kermani, M.H., Gozaliasl, G. (2006). Orbital Period Changes and Long Term Luminosity Variation in Active Binary CG Cyg. In: Giménez, À., Guinan, E., Niarchos, P., Rucinski, S. (eds) Close Binaries in the 21st Century: New Opportunities and Challenges. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-5027-5_38
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DOI: https://doi.org/10.1007/978-1-4020-5027-5_38
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