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The Bimodal Distribution of Donor Stars in X-Ray Binaries

文献类型：期刊论文

作者Zhang J(张嘉)2,3; Zhang GB(张国宝)2,3; Zhu LY(朱俐颖)2,3; Qian, Sheng-Bang1; Zhou X(周肖)2,3; Zhao EG(赵二刚)2,3
刊名PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
出版日期2025-10-01
卷号137期号:10
ISSN号0004-6280
DOI10.1088/1538-3873/ae0369
产权排序第1完成单位
文献子类Article
英文摘要The classification of X-ray binaries into high- and low-mass types has historically lacked a unified, data-driven quantitative criterion, and large-scale statistical studies of the donor star population have been limited. In this work, we address this gap by compiling data for 3964 XRBs and deriving a plentiful set of physical parameters (mass, radius, age, and evolutionary stage) for a sub-sample of 288 donor stars using Gaia DR3 spectral data and stellar evolution models. We find a statistically bimodal distribution in the donor star parameters, which is characterized by a valley at approximately 3 M circle dot or 11,000 K. We uncover the physical mechanism behind this bimodality: a previously unreported parallel tracks phenomenon observed in the relationship between the donor's evolutionary stage and its fundamental parameters, such as luminosity and radius. These two tracks represent distinct main-sequence populations, and the valley between them corresponds to the sparsely populated pre- and post-main-sequence evolutionary phases.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词STELLAR ATMOSPHERIC PARAMETERS ; PARSEC EVOLUTIONARY TRACKS ; GIANT BRANCH PHASE ; LOW-MASS ; SCALING RELATIONS ; MESA ISOCHRONES ; CHANDRA SURVEY ; DATA RELEASE ; I. ; POPULATIONS
资助项目Science Foundation of Yunnan Provincehttps://doi.org/10.13039/501100005273[202503AP140013]; Science Foundation of Yunnan Provincehttps://doi.org/10.13039/501100005273[202501AS070055]; Science Foundation of Yunnan Provincehttps://doi.org/10.13039/501100005273[202401AS070046]; Science Foundation of Yunnan Provincehttps://doi.org/10.13039/501100005273[202401AW070004]; Science Foundation of Yunnan Province[020GJHZ2023030GC]; International Partnership Program of Chinese Academy of Sciences[CMS-CSST-2025-A13]; China Manned Space Program; Yunnan Revitalization Talent Support Program
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001585177900001
出版者IOP Publishing Ltd
资助机构Science Foundation of Yunnan Provincehttps://doi.org/10.13039/501100005273[202503AP140013, 202501AS070055, 202401AS070046, 202401AW070004] ; Science Foundation of Yunnan Province[020GJHZ2023030GC] ; International Partnership Program of Chinese Academy of Sciences[CMS-CSST-2025-A13] ; China Manned Space Program ; Yunnan Revitalization Talent Support Program
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28626]  
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.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People’s Republic of China
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; zhuly@ynao.ac.cn;
3.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China;
推荐引用方式
GB/T 7714		 Zhang J,Zhang GB,Zhu LY,et al. The Bimodal Distribution of Donor Stars in X-Ray Binaries[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2025,137(10).
APA 张嘉,张国宝,朱俐颖,Qian, Sheng-Bang,周肖,&赵二刚.(2025).The Bimodal Distribution of Donor Stars in X-Ray Binaries.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,137(10).
MLA 张嘉,et al."The Bimodal Distribution of Donor Stars in X-Ray Binaries".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 137.10(2025).

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来源：云南天文台

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