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Investigations into the thermal non-equilibrium of W UMa-type contact binaries
Xiong X(熊逍)1,2,3,4; Liu L(刘亮)1,2,3,4; Qian SB(钱声帮)1,2,3,4
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2018-05-01
卷号18期号:5
DOI10.1088/1674-4527/18/5/55
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: Evolution
摘要

Traditionally, some physical details (e.g., magnetic braking, energy transfer, angular momentum loss, etc.) have to be taken into consideration during investigations into the evolution of contact binaries. However, the real evolutionary processes which usually contain several of these physical mechanisms are very complicated as a result of strong interaction between components. To avoid dealing with these factors, a linear relationship is applied to the temperatures of components. It is found that the higher the mass ratio (M-2/M-1) of a contact system, the weaker the deviation from thermal equilibrium. On this basis, a variation trend of fill-out factor (f) changing with mass ratio can be inferred, which is consistent with observations. Moreover, if we stick to this point of view, it should be natural that the number of semi-detached binaries in the predicted broken-contact phase of relaxation oscillations is less than the number in the contact phase.

资助项目Yunnan Natural Science Foundation[2016FB004] ; Young Academic and Technology Leaders project of Yunnan Province[2015HB098] ; National Natural Science Foundation of China[11773066] ; National Natural Science Foundation of China[11403095] ; National Natural Science Foundation of China[11325315] ; Key Research Programme of the Chinese Academy of Sciences[KGZD-EW-603]
项目资助者Yunnan Natural Science Foundation[2016FB004] ; Young Academic and Technology Leaders project of Yunnan Province[2015HB098] ; National Natural Science Foundation of China[11773066, 11403095, 11325315] ; Key Research Programme of the Chinese Academy of Sciences[KGZD-EW-603]
语种英语
学科领域天文学
学科门类理学 ; 理学::天文学
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
ISSN1674-4527
URL查看原文
WOS记录号WOS:000432273900007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]Ursae Majoris Systems ; Physical Parameters ; Overcontact Binary ; Light Curves ; Eclipsing Binaries ; Components ; Stars ; Evolution ; Period ; Deep
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12387
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Xiong X(熊逍)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory of 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
Xiong X,Liu L,Qian SB. Investigations into the thermal non-equilibrium of W UMa-type contact binaries[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2018,18(5).
APA Xiong X,Liu L,&Qian SB.(2018).Investigations into the thermal non-equilibrium of W UMa-type contact binaries.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,18(5).
MLA Xiong X,et al."Investigations into the thermal non-equilibrium of W UMa-type contact binaries".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 18.5(2018).
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