Orbital Period Changes and Long Term Luminosity Variation in Active Binary CG Cyg

D. M. Z. Jassur; M. H. Kermani; G. Gozaliasl

doi:10.1007/s10509-006-9099-7

Orbital Period Changes and Long Term Luminosity Variation in Active Binary CG Cyg

D. M. Z. Jassur, M. H. Kermani, G. Gozaliasl

Not published at Aalto University

University of Tabriz

Research output: Contribution to journal › Article › Scientific › peer-review

2 Citations (Scopus)

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.

Original language	English
Pages (from-to)	157-160
Journal	Astrophysics and Space Science
Volume	304
Issue number	1
DOIs	https://doi.org/10.1007/s10509-006-9099-7
Publication status	Published - 1 Aug 2006
MoE publication type	A1 Journal article-refereed

Keywords

CG Cyg
Eclipsing binary
Period variations

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10.1007/s10509-006-9099-7

http://adsabs.harvard.edu/abs/2006Ap%26SS.304..157J

Cite this

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title = "Orbital Period Changes and Long Term Luminosity Variation in Active Binary CG Cyg",

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",

author = "Jassur, {D. M. Z.} and Kermani, {M. H.} and G. Gozaliasl",

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TY - JOUR

T1 - Orbital Period Changes and Long Term Luminosity Variation in Active Binary CG Cyg

AU - Jassur, D. M. Z.

AU - Kermani, M. H.

AU - Gozaliasl, G.

PY - 2006/8/1

Y1 - 2006/8/1

N2 - 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.

AB - 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.

KW - CG Cyg

KW - Eclipsing binary

KW - Period variations

U2 - 10.1007/s10509-006-9099-7

DO - 10.1007/s10509-006-9099-7

M3 - Article

SN - 0004-640X

VL - 304

SP - 157

EP - 160

JO - Astrophysics and Space Science

JF - Astrophysics and Space Science

IS - 1

ER -

Orbital Period Changes and Long Term Luminosity Variation in Active Binary CG Cyg

Abstract

Keywords

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