Ground-based detection of an extended helium atmosphere in the Saturn-mass exoplanet WASP-69b
文献类型：期刊论文
| 作者 | Nortmann, Lisa1,2; Palle, Enric1,2; Salz, Michael3; Sanz-Forcada, Jorge4; Nagel, Evangelos3; Alonso-Floriano, F. Javier5; Czesla, Stefan3; Yan, Fei6; Chen, Guo1,2,7; Snellen, Ignas A. G.5 |
| 刊名 | SCIENCE
 |
| 出版日期 | 2018-12-21 |
| 卷号 | 362期号:6421页码:1388-+ |
| ISSN号 | 0036-8075 |
| DOI | 10.1126/science.aat5348 |
| 通讯作者 | Nortmann, Lisa(nortman.astro@gmail.com) |
| 英文摘要 | Hot gas giant exoplanets can lose part of their atmosphere due to strong stellar irradiation, and these losses can affect their physical and chemical evolution. Studies of atmospheric escape from exoplanets have mostly relied on space-based observations of the hydrogen Lyman-alpha line in the far ultraviolet region, which is strongly affected by interstellar absorption. Using ground-based high-resolution spectroscopy, we detected excess absorption in the helium triplet at 1083 nanometers during the transit of the Saturn-mass exoplanet WASP-69b, at a signal-to-noise ratio of 18. We measured line blueshifts of several kilometers per second and posttransit absorption, which we interpret as the escape of part of the atmosphere trailing behind the planet in comet-like form. |
| WOS关键词 | BRIGHT K-STAR ; ORBITAL MOTION ; GIANT PLANET ; HOT ; TRANSITS ; ANGSTROM ; WATER ; LINE ; SPIN |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000453845000055 |
| 出版者 | AMER ASSOC ADVANCEMENT SCIENCE |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/20585]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Nortmann, Lisa |
| 作者单位 | 1.Inst Astrofis Canarias, Via Lactea S-N, Tenerife 38205, Spain 2.Univ La Laguna, Dept Astrofis, Tenerife 38206, Spain 3.Univ Hamburg, Hamburger Sternwarte, Gojenbergsweg 112, D-21029 Hamburg, Germany 4.CSIC, European Space Astron Ctr Campus, INTA, Ctr Astrobiol, Camino Castillo S-N, Madrid 28692, Spain 5.Leiden Univ, Leiden Observ, Postbus 9513, NL-2300 RA Leiden, Netherlands 6.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany 7.Chinese Acad Sci, Purple Mt Observ, Key Lab Planetary Sci, Nanjing 210008, Jiangsu, Peoples R China 8.Georg August Univ, Inst Astrophys, D-37077 Gottingen, Germany 9.CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain 10.Univ Complutense Madrid, Dept Astrofis & Ciencias Atmosfera, Fac Ciencias Fis, E-28040 Madrid, Spain |
| 推荐引用方式 GB/T 7714 | Nortmann, Lisa,Palle, Enric,Salz, Michael,et al. Ground-based detection of an extended helium atmosphere in the Saturn-mass exoplanet WASP-69b[J]. SCIENCE,2018,362(6421):1388-+. |
| APA | Nortmann, Lisa.,Palle, Enric.,Salz, Michael.,Sanz-Forcada, Jorge.,Nagel, Evangelos.,...&Zapatero Osorio, Maria R..(2018).Ground-based detection of an extended helium atmosphere in the Saturn-mass exoplanet WASP-69b.SCIENCE,362(6421),1388-+. |
| MLA | Nortmann, Lisa,et al."Ground-based detection of an extended helium atmosphere in the Saturn-mass exoplanet WASP-69b".SCIENCE 362.6421(2018):1388-+. |
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来源：紫金山天文台
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