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Period investigation of Algol systems TZ Eri and TU Her

文献类型：期刊论文

作者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
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2019-08-01
卷号19期号:8页码:8
ISSN号1674-4527
关键词stars: binaries: close stars : binaries: eclipsing stars: individual (TZ Eri, TU Her)
DOI10.1088/1674-4527/19/8/107
产权排序第1完成单位
文献子类Article
英文摘要

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.

学科主题天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化
URL标识查看原文
出版地20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
WOS关键词ANGULAR-MOMENTUM LOSS ; ECLIPSING BINARY ; POSSIBLE MASS ; MODULATION ; DELPHINI ; PERSEI ; DISKS
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
WOS研究方向Astronomy & Astrophysics
语种英语
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号WOS:000483306400002
资助机构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
源URL[http://ir.ynao.ac.cn/handle/114a53/21170]  
专题云南天文台_双星与变星研究组
云南天文台_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
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.

入库方式： OAI收割

来源：云南天文台

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