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Predicting astrometric microlensing events from intermediate-mass stars (3 M⊙ < ML < 5 M⊙)

文献类型：期刊论文

作者Su, Jie7; Wang JC(王建成)3,4,5,6; Zhang, Yigong2; Cheng XM(程向明)3,6; Zhang, Zhenjun1
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2025-07
卷号540期号:4页码:3421-3430
关键词gravitational lensing: micro methods: data analysis astrometry
ISSN号0035-8711
DOI10.1093/mnras/staf907
产权排序第2完成单位
文献子类Article
英文摘要Astrometric microlensing provides a powerful tool for determining the masses of isolated stars. Current predictions for astrometric microlensing events lack the coverage of lens stars with estimated masses between 3 and 5M(circle dot), even though intermediate-mass stars occupy a critical phase in stellar evolution. In this study, we utilize Gaia DR3 data to search for predicted astrometric microlensing events caused by intermediate-mass stars (3M(circle dot)<5M(circle dot)) during the J2020-J2070 epoch. We ultimately identify 25 candidate events, where 24 events are not reported previously. Nine of the predicted microlensing events are likely associated with red giant lens stars. Notably, one event manifests detectable astrometric deflection (0.867 +/- 0.194 mas) and photometric amplification (approximate to 2.85 mmag), which provides unique constraints on stellar kinematics and lensing geometry.
学科主题天文学 ; 天体测量学
URL标识查看原文
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
WOS关键词DATA RELEASE ; WHITE-DWARF ; CROSS-MATCH ; BLACK-HOLE ; CATALOG
资助项目National Natural Science Foundation of China[11403101]; National Natural Science Foundation of China[12173085]; National Natural Science Foundation of China[23B160001]; Key Scientific Research Projects in Higher Education Institutions of Henan Province[252300420884]; Natural Science Foundation of Henan; China Manned Space Project
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001518799400001
出版者OXFORD UNIV PRESS
资助机构National Natural Science Foundation of China[11403101, 12173085] ; National Natural Science Foundation of China[23B160001] ; Key Scientific Research Projects in Higher Education Institutions of Henan Province[252300420884] ; Natural Science Foundation of Henan ; China Manned Space Project
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28409]  
专题云南天文台_高能天体物理研究组
云南天文台_射电天文研究组
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Su, Jie; Zhang, Yigong; Zhang, Zhenjun
作者单位1.School of Computer Science and Information Engineering, Anyang Institute of Technology, Anyang 455000, China
2.College of Information Engineering, Kunming University, Kunming 650214, China;
3.University of Chinese Academy of Sciences, Beijing 100049, China;
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China;
5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China;
6.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
7.Yunnan Agricultural University, College of Big Data, Kunming 650201, China;
推荐引用方式
GB/T 7714		 Su, Jie,Wang JC,Zhang, Yigong,et al. Predicting astrometric microlensing events from intermediate-mass stars (3 M⊙ < ML < 5 M⊙)[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2025,540(4):3421-3430.
APA Su, Jie,王建成,Zhang, Yigong,程向明,&Zhang, Zhenjun.(2025).Predicting astrometric microlensing events from intermediate-mass stars (3 M⊙ < ML < 5 M⊙).MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,540(4),3421-3430.
MLA Su, Jie,et al."Predicting astrometric microlensing events from intermediate-mass stars (3 M⊙ < ML < 5 M⊙)".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 540.4(2025):3421-3430.

入库方式： OAI收割

来源：云南天文台

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