Close binary system GO Cyg
Küçük Resim Yok
Tarih
2012
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, we present long term photometric variations of the close binary system GO Cyg. Modelling of the system shows that the primary is filling Roche lobe and the secondary of the system is almost filling its Roche lobe. The physical parameters of the system are M1 = 3.0 ± 0.2M ?, M2 = 1.3 ± 0.1M?, R 1 = 2.50 ± 0.12R?, R2 = 1.75 ± 0.09R?, L1 = 64 ± 9L ?, L2 = 4.9 ± 0.7L?, and a = 5.5 ± 0.3R?. Our results show that GO Cyg is the most massive system near contact binary (NCB). Analysis of times of the minima shows a sinusoidal variation with a period of 92.3 ± 0.5 yr due to a third body whose mass is less than 2.3M?. Finally a period variation rate of -1.4 × 10-9 d/yr has been determined using all available light curves. © 2011 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Stars: binaries: close, Stars: binaries: eclipsing, Stars: binaries: general, Stars: fundamental parameters, Stars: low-mass
Kaynak
New Astronomy
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
17
Sayı
3
