MOA-2016-BLG-227Lb: A Massive Planet Characterized by Combining Light-curve Analysis and Keck AO Imaging
文献类型：期刊论文
| 作者 | Koshimoto, N.1,46; Shvartzvald, Y.2,47,48,49; Bennett, D. P.3,4,46; Penny, M. T.5,50; Hundertmark, M.6,7,8,51; Bond, I. A.9,46; Zang, W. C.10,11,12,50; Henderson, C. B.2,47,49; Suzuki, D.3,4,46; Rattenbury, N. J.13,46 |
| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2017-07-01 |
| 卷号 | 154期号:1 |
| 关键词 | gravitational lensing: micro planetary systems |
| 英文摘要 | We report the discovery of a microlensing planet-MOA-2016-BLG-227Lb-with a large planet/host mass ratio of q similar or equal to 9 x 10(-3). This event was located near the K2 Campaign 9 field that was observed by a large number of telescopes. As a result, the event was in the microlensing survey area of a number of these telescopes, and this enabled good coverage of the planetary light-curve signal. High angular resolution adaptive optics images from the Keck telescope reveal excess flux at the position of the source above the flux of the source star, as indicated by the light-curve model. This excess flux could be due to the lens star, but it could also be due to a companion to the source or lens star, or even an unrelated star. We consider all these possibilities in a Bayesian analysis in the context of a standard Galactic model. Our analysis indicates that it is unlikely that a large fraction of the excess flux comes from the lens, unless solar-type stars are much more likely to host planets of this mass ratio than lower mass stars. We recommend that a method similar to the one developed in this paper be used for other events with high angular resolution follow-up observations when the follow-up observations are insufficient to measure the lens-source relative proper motion. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | INTERSTELLAR EXTINCTION LAW ; SURVEY MICROLENSING PLANET ; GALACTIC BULGE ; GIANT PLANETS ; METALLICITY DISTRIBUTION ; JUPITER/SATURN ANALOG ; STELLAR PHOTOMETRY ; INNER MILKY ; OGLE-III ; EVENT |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000403443800001 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8792]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, 1-1 Machikaneyama, Toyonaka, Osaka 5600043, Japan 2.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA 3.NASA, Goddard Space Flight Ctr, Lab Exoplanets & Stellar Astrophys, Greenbelt, MD 20771 USA 4.Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA 5.Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA 6.Zentrum Astron Univ Heidelberg ZAH, Astron Rech Inst, D-69120 Heidelberg, Germany 7.Univ Copenhagen, Niels Bohr Inst, Oster Voldgade 5, DK-1350 Copenhagen, Denmark 8.Univ Copenhagen, Ctr Star & Planet Format, Oster Voldgade 5, DK-1350 Copenhagen, Denmark 9.Massey Univ, Inst Informat & Math Sci, North Shore Mail Ctr, Private Bag 102-904, Auckland, New Zealand 10.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Koshimoto, N.,Shvartzvald, Y.,Bennett, D. P.,et al. MOA-2016-BLG-227Lb: A Massive Planet Characterized by Combining Light-curve Analysis and Keck AO Imaging[J]. ASTRONOMICAL JOURNAL,2017,154(1). |
| APA | Koshimoto, N..,Shvartzvald, Y..,Bennett, D. P..,Penny, M. T..,Hundertmark, M..,...&VST-K2C9 Team.(2017).MOA-2016-BLG-227Lb: A Massive Planet Characterized by Combining Light-curve Analysis and Keck AO Imaging.ASTRONOMICAL JOURNAL,154(1). |
| MLA | Koshimoto, N.,et al."MOA-2016-BLG-227Lb: A Massive Planet Characterized by Combining Light-curve Analysis and Keck AO Imaging".ASTRONOMICAL JOURNAL 154.1(2017). |
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。