OGLE-2011-BLG-0265Lb: A JOVIAN MICROLENSING PLANET ORBITING AN M DWARF
文献类型：期刊论文
| 作者 | Skowron, J; Shin, IG; Udalski, A; Han, C; Sumi, T; Shvartzvald, Y; Gould, A; Prester, DD; Street, RA; Jorgensen, UG |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2015-05-01 |
| 卷号 | 804期号:1 |
| 关键词 | gravitational lensing: micro planetary systems |
| ISSN号 | 0004-637X |
| 产权排序 | 第五十四完成单位 |
| 通讯作者 | Tregloan-Reed, J (reprint author), NASA, Ames Res Ctr, Moffett Field, CA 94035 USA. |
| 英文摘要 | We report the discovery of a Jupiter-mass planet orbiting an M-dwarf star that gave rise to the microlensing event OGLE-2011-BLG-0265. Such a system is very rare among known planetary systems and thus the discovery is important for theoretical studies of planetary formation and evolution. High-cadence temporal coverage of the planetary signal, combined with extended observations throughout the event, allows us to accurately model the observed light curve. However, the final microlensing solution remains degenerate, yielding two possible configurations of the planet and the host star. In the case of the preferred solution, the mass of the planet is M-p = 0.9 +/- 0.3 M-J, and the planet is orbiting a star with a mass M = 0.22 +/- 0.06 M-circle dot. The second possible configuration (2 sigma away) consists of a planet with M-p = 0.6 +/- 0.3M(J) and host star with M = 0.14 +/- 0.06M(circle dot). The system is located in the Galactic disk 3-4 kpc toward the Galactic bulge. In both cases, with an orbit size of 1.5-2.0 AU, the planet is a "cold Jupiter"-located well beyond the "snow line" of the host star. Currently available data make the secure selection of the correct solution difficult, but there are prospects for lifting the degeneracy with additional follow-up observations in the future, when the lens and source star separate. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SURFACE BRIGHTNESS RELATIONS ; GRAVITATIONAL BINARY-LENS ; GALACTIC BULGE ; MASS PLANET ; OGLE-III ; JUPITER/SATURN ANALOG ; ANGULAR SIZES ; GIANT PLANETS ; SNOW LINE ; STARS |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/0004-637X/804/1/33/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000354189500033 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6810]  |
| 专题 | 云南天文台_系外行星研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 推荐引用方式 GB/T 7714 | Skowron, J,Shin, IG,Udalski, A,et al. OGLE-2011-BLG-0265Lb: A JOVIAN MICROLENSING PLANET ORBITING AN M DWARF[J]. ASTROPHYSICAL JOURNAL,2015,804(1). |
| APA | Skowron, J.,Shin, IG.,Udalski, A.,Han, C.,Sumi, T.,...&Gu SH.(2015).OGLE-2011-BLG-0265Lb: A JOVIAN MICROLENSING PLANET ORBITING AN M DWARF.ASTROPHYSICAL JOURNAL,804(1). |
| MLA | Skowron, J,et al."OGLE-2011-BLG-0265Lb: A JOVIAN MICROLENSING PLANET ORBITING AN M DWARF".ASTROPHYSICAL JOURNAL 804.1(2015). |
入库方式： OAI收割
来源：云南天文台
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