OGLE-2017-BLG-1130: The First Binary Gravitational Microlens Detected from Spitzer Only
文献类型：期刊论文
| 作者 | Wang,Tianshu2; Calchi Novati,S.3; Udalski,A.4; Gould,A.1,5,6; Mao,Shude2,7,8 ; Zang,W.2; Beichman,C.9; Bryden,G.10; Carey,S.11; Gaudi,B. S.6
|
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2018-06-07 |
| 卷号 | 860期号:1 |
| 关键词 | binaries: general gravitational lensing: micro |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aabcd2 |
| 英文摘要 | Abstract We analyze the binary gravitational microlensing event OGLE-2017-BLG-1130 (mass ratio q?～?0.45), the first published case in which the binary anomaly was detected only by the Spitzer Space Telescope. This event provides strong evidence that some binary signals can be missed by observations from the ground alone but detected by Spitzer. We therefore invert the normal procedure, first finding the lens parameters by fitting the space-based data and then measuring the microlensing parallax using ground-based observations. We also show that the normal four-fold space-based degeneracy in the single-lens case can become a weak eight-fold degeneracy in binary-lens events. Although this degeneracy is resolved in event OGLE-2017-BLG-1130, it might persist in other events. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-860-1-AABCD2 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/21639]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Max-Planck-Institute for Astronomy, K?nigstuhl 17, D-69117 Heidelberg, Germany 2.Physics Department and Tsinghua Centre for Astrophysics, Tsinghua University, Beijing 100084, People's Republic of China 3.IPAC, Mail Code 100-22, Caltech, 1200 E. California Blvd., Pasadena, CA 91125, USA 4.Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland 5.Korea Astronomy and Space Science Institute, Daejon 34055, Republic of Korea 6.Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH 43210, USA 7.National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Rd., Chaoyang District, Beijing 100012, People's Republic of China 8.Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester M13 9PL, UK 9.NASA Exoplanet Science Institute, MS 100-22, California Institute of Technology, Pasadena, CA 91125, USA 10.Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA |
| 推荐引用方式 GB/T 7714 | Wang,Tianshu,Calchi Novati,S.,Udalski,A.,et al. OGLE-2017-BLG-1130: The First Binary Gravitational Microlens Detected from Spitzer Only[J]. The Astrophysical Journal,2018,860(1). |
| APA | Wang,Tianshu.,Calchi Novati,S..,Udalski,A..,Gould,A..,Mao,Shude.,...&Pogge,R. W..(2018).OGLE-2017-BLG-1130: The First Binary Gravitational Microlens Detected from Spitzer Only.The Astrophysical Journal,860(1). |
| MLA | Wang,Tianshu,et al."OGLE-2017-BLG-1130: The First Binary Gravitational Microlens Detected from Spitzer Only".The Astrophysical Journal 860.1(2018). |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。