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The Reason for the Occurrence of W-type Contact Binaries

文献类型：期刊论文

作者Zhang J(张嘉)3; Qian, Sheng-Bang2; Zhu LY(朱俐颖)3; Li, Xu-Zhi1,4
刊名ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期2026
卷号282期号:1
ISSN号0067-0049
DOI10.3847/1538-4365/ae21ce
产权排序第1完成单位
文献子类Article
英文摘要For more than half a century, the puzzling W-type phenomenon in contact binaries has challenged astrophysicists. In these systems, the less massive component exhibits a higher surface temperature than its more massive companion, which is a reversal of the typical A-type configuration, where the more massive star is hotter. This counterintuitive temperature inversion defies basic stellar physics and still lacks a widely accepted explanation. In this study, we assembled a sample of over 3000 extensively observed contact binaries and derived their complete set of physical parameters. Our statistical analysis revealed a strong positive correlation between the occurrence of W-type contact binaries and the intensity and frequency of magnetic activities. This result strongly supports the hypothesis that magnetic activities are the primary driver of the W-type phenomenon and offers a compelling explanation for the observed transitions between the W-type and A-type.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND
WOS关键词RESOLVED STELLAR POPULATIONS ; PARSEC EVOLUTIONARY TRACKS ; URSAE-MAJORIS STARS ; GIANT BRANCH PHASE ; MASS-RATIO ; PHYSICAL PARAMETERS ; MESA ISOCHRONES ; MODULES ; ROTATION ; CATALOG
资助项目China manned space program[CMS-CSST-2025-A16]; (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) divided by Natural Science Foundation of Yunnan Province (Yunnan Natural Science Foundation)[202503AP140013]; International partnership program of Chinese Academy of Sciences[020GJHZ2023030GC]; Anhui Provincial Natural Science Foundation[2308085QA35]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001651782400001
出版者IOP Publishing Ltd
资助机构China manned space program[CMS-CSST-2025-A16] ; (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) divided by Natural Science Foundation of Yunnan Province (Yunnan Natural Science Foundation)[202503AP140013] ; International partnership program of Chinese Academy of Sciences[020GJHZ2023030GC] ; Anhui Provincial Natural Science Foundation[2308085QA35]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28814]  
专题云南天文台_双星与变星研究组
通讯作者Zhu LY(朱俐颖)
作者单位1.School of Mathematics and Physics, Anqing Normal University, Anqing 246133, People’s Republic of China;
2.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People’s Republic of China;
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; zhuly@ynao.ac.cn;
4.Institute of Astronomy and Astrophysics, Anqing Normal University, Anqing 246133, People’s Republic of China
推荐引用方式
GB/T 7714		 Zhang J,Qian, Sheng-Bang,Zhu LY,et al. The Reason for the Occurrence of W-type Contact Binaries[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2026,282(1).
APA 张嘉,Qian, Sheng-Bang,朱俐颖,&Li, Xu-Zhi.(2026).The Reason for the Occurrence of W-type Contact Binaries.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,282(1).
MLA 张嘉,et al."The Reason for the Occurrence of W-type Contact Binaries".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 282.1(2026).

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来源：云南天文台

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