The Aligned Orbit of the Eccentric Warm Jupiter K2-232b
文献类型：期刊论文
| 作者 | Wang,Songhu9; Winn,Joshua N.10; Addison,Brett C.7; Dai,Fei1; Rice,Malena8; Holden,Bradford2; Burt,Jennifer A.6; Wang,Xian-Yu4,5; Butler,R. Paul3; Vogt,Steven S.2 |
| 刊名 | The Astronomical Journal
 |
| 出版日期 | 2021-07-08 |
| 卷号 | 162期号:2 |
| ISSN号 | 0004-6256 |
| 关键词 | Exoplanets |
| DOI | 10.3847/1538-3881/ac0626 |
| 英文摘要 | Abstract Measuring the obliquity distribution of stars hosting warm Jupiters may help us to understand the formation of close-orbiting gas giants. Few such measurements have been performed due to practical difficulties in scheduling observations of the relatively infrequent and long-duration transits of warm Jupiters. Here, we report a measurement of the Rossiter–McLaughlin effect for K2-232 b, a warm Jupiter on an 11.17 day orbit with an eccentricity of 0.26. The data were obtained with the Automated Planet Finder during two separate transits. The planet’s orbit appears to be well aligned with the spin axis of the host star, with a projected spin–orbit angle of λ = ?11.°1 ± 6.°6. Combined with the other available data, we find that high obliquities are almost exclusively associated with planets that either have an orbital separation greater than 10 stellar radii or orbit stars with effective temperatures hotter than 6000 K. This pattern suggests that the obliquities of the closest-orbiting giant planets around cooler stars have been damped by tidal effects. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-6256-162-2-AC0626 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/56638]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Wang,Songhu |
| 作者单位 | 1.Division of Geological and Planetary Sciences 1200 E California Boulevard, Pasadena, CA 91125, USA 2.UCO/Lick Observatory, Department of Astronomy and Astrophysics, University of California at Santa Cruz, Santa Cruz, CA 95064, USA 3.Earth and Planets Laboratory, Carnegie Institution for Science, 5241 Broad Branch Road, NW, Washington, DC 20015, USA 4.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 5.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China 6.Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA 7.University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350 Australia 8.Department of Astronomy, Yale University, New Haven, CT 06511, USA 9.Department of Astronomy, Indiana University, Bloomington, IN 47405, USA; sw121@iu.edu 10.Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA |
| 推荐引用方式 GB/T 7714 | Wang,Songhu,Winn,Joshua N.,Addison,Brett C.,et al. The Aligned Orbit of the Eccentric Warm Jupiter K2-232b[J]. The Astronomical Journal,2021,162(2). |
| APA | Wang,Songhu.,Winn,Joshua N..,Addison,Brett C..,Dai,Fei.,Rice,Malena.,...&Laughlin,Gregory.(2021).The Aligned Orbit of the Eccentric Warm Jupiter K2-232b.The Astronomical Journal,162(2). |
| MLA | Wang,Songhu,et al."The Aligned Orbit of the Eccentric Warm Jupiter K2-232b".The Astronomical Journal 162.2(2021). |
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来源：国家天文台
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