کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1778815 | 1523734 | 2016 | 5 صفحه PDF | دانلود رایگان |
• The first analysis of the light curve of the W UMa system GSC 1042–2191 were made.
• The orbital and physical parameters of the system were obtained.
• The system was found a low mass ratio, A-type over-contact binary with a fill out parameter of f 65.01%.
We present new photometric observations covering eight minima times for the eclipsing binary GSC 1042-2191. The light curves in BVRIBVRI colors were analyzed by using WD-code for the system parameters. Eight minima times were obtained from the new observations. The system is found a low mass ratio (q = 0.148), A-type over-contact binary with a fill out parameter of f = 65.01 ± 12.18%. The preliminary absolute dimensions (M1= 1.26 ± 0.06 M⊙, M2 = 0.18 ± 0.06 M⊙, R1 = 1.54 ± 0.20 R⊙, R2 = 0.69 ± 0.01 R⊙, L1L1 =3.30 ± 0.30 L⊙ and L2L2 = 0.59 ± 0.20 L⊙) indicate the very much oversized and over-luminous secondary component, by assuming the present luminosity of the secondary is its main sequence luminosity, we predict the original mass is about 0.8 M⊙, this means the present secondary could be transferred and/or lost 77% of its original mass and only its core is left.
Journal: New Astronomy - Volume 44, April 2016, Pages 35–39