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

Ei julkaistu Aalto-yliopiston affiliaatiolla

University of Tabriz

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

2 Sitaatiot (Scopus)

Abstrakti

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.

Alkuperäiskieli	Englanti
Sivut	157-160
Julkaisu	Astrophysics and Space Science
Vuosikerta	304
Numero	1
DOI - pysyväislinkit	https://doi.org/10.1007/s10509-006-9099-7
Tila	Julkaistu - 1 elok. 2006
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Pääsy asiakirjaan

10.1007/s10509-006-9099-7

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

Siteeraa tätä

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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",

year = "2006",

month = aug,

day = "1",

doi = "10.1007/s10509-006-9099-7",

language = "English",

volume = "304",

pages = "157--160",

journal = "Astrophysics and Space Science",

issn = "0004-640X",

publisher = "Springer",

number = "1",

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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

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