Absolute dimensions of the close binary systems v453 monocerotis and v523 cassiopeiae
Küçük Resim Yok
Tarih
2009
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
We present multi-colour CCD observations of the low-temperature contact binaries, V453 Mon and V523 Cas. Their light curves are modelled to determine a new set of stellar and orbital parameters. Analysis of mid-eclipse times yields a new linear ephemeris for both systems. A period decrease (dP/dt = 2.3 × 10-7 days/yr) in V453 Mon is discovered. V523 Cas, however, is detected to show a period increase (dP/dt = 9.8 × 10-8 days/yr) because of the mass transfer of a rate of 1.1 × 10-7 M? yr-1, from a less massive donor. Using these findings we can determine the physical parameters of the components of V523 Cas to be M1 = 0.76 (3)M?, M2 = 0.39 (2)M?, R1 = 0.74 (2)R?, R2 = 0.55 (2)R?, L1 = 0.19 (3)L?, L2 = 0.14 (3)L?, and the distance of system as 46(9) pc. © Springer Science+Business Media B.V. 2009.
Açıklama
Anahtar Kelimeler
Stars: binaries: eclipsing, Stars: fundamental parameters, Stars: individual: V453 Mon, Stars: individual: V523 Cas
Kaynak
Astrophysics and Space Science
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
323
Sayı
1
