Orbital Period Changes and Long Term Luminosity Variation in Active Binary CG Cyg |
| |
Authors: | D. M. Z. Jassur M. H. Kermani G. Gozaliasl |
| |
Affiliation: | (1) Department of Theoretical Physics and Astrophysics, Tabriz, University, Tabriz, 51664, Iran;(2) Research Institute for Applied Physics and Astronomy, Tabriz, 51664, Iran |
| |
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 1.4×10-7day as the amplitudes of orbital period modulation, and Pmod1∼ 52.3 yr and Pmod2 ∼ 15.9 yr as the modulation periodicities. Finally, the consequences of period changes have been discussed on the basis of Applegate mechanism. |
| |
Keywords: | CG Cyg Eclipsing binary Period variations |
本文献已被 SpringerLink 等数据库收录! |
|