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VLBI astrometry of radio stars to link radio and optical celestial reference frames - II. 11 radio stars

文献类型：期刊论文

作者Zhang, Jingdong8,9,10; Zhang, Bo10; Xu, Shuangjing7,10; Mai, Xiaofeng6,9,10; Reid, Mark J1; Jiang, Pengfei5; Chen W(陈文)3,4; Shu, Fengchun10; Li, Jinling10; Cui, Lang5
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2026-04
卷号547期号:2
关键词astrometry parallaxes proper motions reference systems radio continuum: stars
ISSN号0035-8711
DOI10.1093/mnras/stag244
产权排序第8完成单位
文献子类Article
英文摘要The alignment between the radio-based International Celestial Reference Frame (ICRF) and the optical Gaia Celestial Reference Frame (Gaia-CRF) is critical for multi-waveband astronomy, yet systematic offsets at the optical bright end (G less than or similar to 13) limit their consistency. While radio stars offer a potential link between these frames, their utility has been restricted by the scarcity of precise Very Long Baseline Interferometry (VLBI) astrometry. In this study, we present new VLBI astrometry of 11 radio stars using the Very Long Baseline Array (VLBA), expanding the existing sample with positions, parallaxes, and proper motions measured. All 11 radio stars were detected, for 10 of which parallaxes and proper motions can be estimated, achieving median uncertainties better than 0.1 mas and 0.1 mas yr(-1), respectively. These new samples greatly contribute to the link between ICRF and Gaia-CRF at the optical bright end.
学科主题天文学 ; 射电天文学
URL标识查看原文
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
WOS关键词MULTIVIEW ; CATALOG
资助项目Chinese Academy of Sciences[XDA0350205]; National Natural Science Foundation of China[U2031212]; National Key Research and Development Program of China[2024YFA1611501]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001712439900001
出版者OXFORD UNIV PRESS
资助机构Chinese Academy of Sciences[XDA0350205] ; National Natural Science Foundation of China[U2031212] ; National Key Research and Development Program of China[2024YFA1611501]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/29049]  
专题云南天文台_射电天文研究组
通讯作者Zhang, Bo
作者单位1.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA;
2.School of Astronomy and Space Science, Key Laboratory of Modern Astronomy and Astrophysics (Ministry of Education), Nanjing University, Nanjing 210023, People’s Republic of China
3.Yunnan Key Laboratory of the Solar Physics and Space Science, Kunming 650216, People’s Republic of China;
4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, Yunnan, People’s Republic of China;
5.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150 Science 1-Street, Urumqi 830011, People’s Republic of China;
6.Department of Physics, University of Helsinki, P.O. Box 64, Helsinki FI-00014, Finland;
7.Korea Astronomy and Space Science Institute, 776 Daedeok-daero, Yuseong-gu, Daejeon 34055, Republic of Korea;
8.Department of Geodesy and Geodynamics, Finnish Geospatial Research Institute (FGI), National Land Survey of Finland, Vuorimiehentie 5, Espoo FI-02150, Finland;
9.School of Astronomy and Space Science, University of Chinese Academy of Sciences, No.19 (A) Yuquan Rd, Shijingshan, Beijing 100049, People’s Republic of China;
10.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People’s Republic of China;
推荐引用方式
GB/T 7714		 Zhang, Jingdong,Zhang, Bo,Xu, Shuangjing,et al. VLBI astrometry of radio stars to link radio and optical celestial reference frames - II. 11 radio stars[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2026,547(2).
APA Zhang, Jingdong.,Zhang, Bo.,Xu, Shuangjing.,Mai, Xiaofeng.,Reid, Mark J.,...&Qi, Zhaoxiang.(2026).VLBI astrometry of radio stars to link radio and optical celestial reference frames - II. 11 radio stars.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,547(2).
MLA Zhang, Jingdong,et al."VLBI astrometry of radio stars to link radio and optical celestial reference frames - II. 11 radio stars".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 547.2(2026).

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