The ROSAT bright source 1RXS J201607.0+251645: an active Algol-type binary

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	The ROSAT bright source 1RXS J201607.0+251645: an active Algol-type binary
	Li, Hua-Li 1,2,3; Yang, Yuan-Gui 1,4; Su, Wei 1,3; Wang, Hui-Juan 1,3; Wei, Jian-Yan 1
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2009-09-01
卷号	9 期号:9 页码:1035-1048
关键词	stars: binaries: close stars: binaries: eclipsing stars: individual: 1RXS J201607.0+251645, HD 339946
ISSN号	1674-4527
通讯作者	lhl@bao.ac.cn
英文摘要	1RXS J201607.0+251645 is identified as an eclipsing binary. We present preliminary observations in the V band with the 0.6-m telescope for three years and extensive observations in the V and R bands with the 0.8-m telescope for six nights, respectively. The light curve of the system is EB type. Five light minimum times were obtained and the orbital period of 0.388058(d)(+/-0.00044(d)) is determined. The photometric solution given by the 2003-version of the Wilson-Devinney program suggests that the binary is a semidetached system with photometric mass ratio 0.895(+/-0.006), which is probably comprised of a G5 primary and an oversized K5 secondary. The less massive component has completely filled its Roche lobe, while the other one almost fills its Roche lobe with a filling factor of 93.4%. The system shows a varying O'Connell effect in its phase folded diagrams from 2005 to 2007, and is X-ray luminous with log L(X)/L(bol) similar to -3.27. Possible mechanisms to account for these two phenomena are discussed. Finally, we infer that the binary may be in thermal oscillation or may evolve into a contact binary.
学科主题	恒星和恒星物理
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	ALL-SKY SURVEY ; MAGNETIC ACTIVITY ; LIGHT CURVES ; MASS-TRANSFER ; ORION NEBULA ; RS CVN ; STARS ; EVOLUTION ; SYSTEMS ; PERIOD
收录类别	SCI
资助信息	National Natural Science Foundation of China (Grant Nos. 10778707 and 10473013)
原文出处	http://www.raa-journal.org
语种	英语
WOS记录号	WOS:000270404200008
公开日期	2013-03-06
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/195]
专题	新疆天文台_其它
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Urumqi Observ, Natl Astron Observ, Urumqi 830011, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 4.Huaibei Coal Ind Teachers Coll, Sch Phys & Elect Informat, Huaibei 235000, Peoples R China
推荐引用方式 GB/T 7714	Li, Hua-Li,Yang, Yuan-Gui,Su, Wei,et al. The ROSAT bright source 1RXS J201607.0+251645: an active Algol-type binary[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2009,9(9):1035-1048.
APA	Li, Hua-Li,Yang, Yuan-Gui,Su, Wei,Wang, Hui-Juan,&Wei, Jian-Yan.(2009).The ROSAT bright source 1RXS J201607.0+251645: an active Algol-type binary.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,9(9),1035-1048.
MLA	Li, Hua-Li,et al."The ROSAT bright source 1RXS J201607.0+251645: an active Algol-type binary".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 9.9(2009):1035-1048.