Comparison of Gaia DR2 Parallaxes of Stars with VLBI Astrometry
文献类型：期刊论文
| 作者 | Xu,Shuangjing2,3; Zhang,Bo2 ; Reid,Mark J.1; Zheng,Xingwu4; Wang,Guangli2,3
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| 刊名 | The Astrophysical Journal
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| 出版日期 | 2019-04-22 |
| 卷号 | 875期号:2 |
| 关键词 | astrometry parallaxes stars: distances |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ab0e83 |
| 英文摘要 | Abstract We compare the parallaxes of stars from VLBI astrometry in the literature to those in the Gaia DR2 catalog. Our full sample contains young stellar objects, evolved AGB stars, pulsars, and other radio stars. Excluding AGB stars, which show significant discrepancies between Gaia and VLBI parallaxes, and stars in binary systems, we obtain an average, systematic, parallax offset of ?75?±?29 μas for Gaia DR2, consistent with their estimate of a parallax zero-point between ?100 and 0 μas. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-875-2-AB0E83 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://119.78.226.72/handle/331011/31813]  |
| 专题 | 中国科学院上海天文台 |
| 作者单位 | 1.Center for Astrophysics ∣?Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA 2.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People's Republic of China; zb@shao.ac.cn 3.University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, People's Republic of China 4.School of Astronomy and Space Science, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Xu,Shuangjing,Zhang,Bo,Reid,Mark J.,et al. Comparison of Gaia DR2 Parallaxes of Stars with VLBI Astrometry[J]. The Astrophysical Journal,2019,875(2). |
| APA | Xu,Shuangjing,Zhang,Bo,Reid,Mark J.,Zheng,Xingwu,&Wang,Guangli.(2019).Comparison of Gaia DR2 Parallaxes of Stars with VLBI Astrometry.The Astrophysical Journal,875(2). |
| MLA | Xu,Shuangjing,et al."Comparison of Gaia DR2 Parallaxes of Stars with VLBI Astrometry".The Astrophysical Journal 875.2(2019). |
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来源：上海天文台
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