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题名: Photometric Solutions of Three Eclipsing Binary Stars Observed from Dome A, Antarctica
作者: Liu, N.; Fu, J. N.; Zong, W.; Wang, L. Z.; Uddin, S. A.; Zhang, X. B.; Zhang, Y. P.; Cang, T. Q.; Li, G.; Yang, Y.; Yang, G. C.; Mould, J.; Morrell, N.
刊名: ASTRONOMICAL JOURNAL
出版日期: 2018
卷号: 155, 期号:4, 页码:168
英文摘要: Based on spectroscopic observations for the eclipsing binaries CSTAR 036162 and CSTAR 055495 with the WiFeS/2.3 m telescope at SSO and CSTAR 057775 with the Mage/Magellan I at LCO in 2017, stellar parameters are derived. More than 100 nights of almost-continuous light curves reduced from the time-series photometric observations by CSTAR at Dome A of Antarctic in i in 2008 and in g and r in 2009, respectively, are applied to find photometric solutions for the three binaries with the Wilson-Devinney code. The results show that CSTAR 036162 is a detached configuration with the mass ratio q = 0.354 +/- 0.0009, while CSTAR 055495 is a semi-detached binary system with the unusual q = 0.946 +/- 0.0006, which indicates that CSTAR 055495 may be a rare binary system with mass ratio close to one and the secondary component filling its Roche Lobe. This implies that a mass-ratio reversal has just occurred and CSTAR 055495 is in a rapid mass-transfer stage. Finally, CSTAR 057775 is believed to be an A-type W UMa binary with q = 0.301 +/- 0.0008 and a fill-out factor of f = 0.742(8).
语种: 英语
WOS记录号: WOS:000428384200002
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/17998
Appears in Collections:暗物质和空间天文实验室_期刊论文

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