Period investigation of Algol systems TZ Eri and TU Her

doi:10.1088/1674-4527/19/8/107

YNAO OpenIR > 双星与变星研究组

	Period investigation of Algol systems TZ Eri and TU Her
	Wang ZH(王志华)1,2,3,4 ; Zhu LY(朱俐颖)1,2,3,4 ; Li LJ(李临甲)1,2,3 ; Tian XM(田晓慢)1,2,3,4
发表期刊	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2019-08-01
卷号	19 期号:8 页码:8
DOI	10.1088/1674-4527/19/8/107
产权排序	第1完成单位
收录类别	SCI
关键词	stars: binaries: close stars : binaries: eclipsing stars: individual (TZ Eri, TU Her)
摘要	TZ Eri and TU Her are both classic Algol-type systems (Algols). By observing and collecting times of minimum light, we constructed the O - C curves for the two systems. The long-time upward and downward parabolas shown in these diagrams are considered to be the result of the combination of mass transfer and angular momentum loss. The secular orbital period change rates are dP/dt = 4.74(+/- 0.12) x 10(-7) d yr(-1) and dP/dt = -2.33(+/- 0.01) x 10(-6) d yr(-1), respectively. There are also cyclic variations in their O - C curves which might be caused by the light-travel time effect (LTTE). A circumbinary star may exist in the TZ Eri system with a mass of at least 1.34 M-circle dot,M- while there are possibly two celestial bodies that almost follow a 2 : 1 resonance orbit around the TU Her binary pair. Their masses are at least 2.43 M-circle dot and 1.27 M-circle dot.
资助项目	National Natural Science Foundation of China[11573063] ; National Natural Science Foundation of China[11611530685] ; Key Science Foundation of Yunnan Province[2017FA001] ; CAS "Light of West China" Program ; CAS Interdisciplinary Innovation Team
项目资助者	National Natural Science Foundation of China[11573063, 11611530685] ; Key Science Foundation of Yunnan Province[2017FA001] ; CAS "Light of West China" Program ; CAS Interdisciplinary Innovation Team
语种	英语
学科领域	天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化
文章类型	Article
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
出版地	20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN	1674-4527
URL	查看原文
WOS记录号	WOS:000483306400002
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	ANGULAR-MOMENTUM LOSS ; ECLIPSING BINARY ; POSSIBLE MASS ; MODULATION ; DELPHINI ; PERSEI ; DISKS
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/21171
专题	双星与变星研究组中国科学院天体结构与演化重点实验室
通讯作者	Wang ZH(王志华)
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China 3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100101, China 4.University of Chinese Academy of Sciences, Beijing 100049, China
第一作者单位	中国科学院云南天文台
通讯作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Wang ZH,Zhu LY,Li LJ,et al. Period investigation of Algol systems TZ Eri and TU Her[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(8):8.
APA	Wang ZH,Zhu LY,Li LJ,&Tian XM.(2019).Period investigation of Algol systems TZ Eri and TU Her.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(8),8.
MLA	Wang ZH,et al."Period investigation of Algol systems TZ Eri and TU Her".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.8(2019):8.

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