The GTC exoplanet transit spectroscopy survey VI. Detection of sodium in WASP-52b's cloudy atmosphere
文献类型：期刊论文
| 作者 | Chen, G.1,2,3; Palle, E.1,2; Nortmann, L.1,2; Murgas, F.1,2; Parviainen, H.1,2; Nowak, G.1,2 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 600页码:6 |
| 关键词 | planetary systems planets and satellites: individual: WASP-52b planets and satellites: atmospheres techniques: spectroscopic |
| ISSN号 | 1432-0746 |
| DOI | 10.1051/0004-6361/201730736 |
| 通讯作者 | Chen, G.(gchen@iac.es) |
| 英文摘要 | We report the first detection of sodium absorption in the atmosphere of the hot Jupiter WASP-52b. We observed one transit of WASP-52b with the low-resolution Optical System for Imaging and low-Intermediate-Resolution Integrated Spectroscopy (OSIRIS) at the 10.4 m Gran Telescopio Canarias (GTC). The resulting transmission spectrum, covering the wavelength range from 522 nm to 903 nm, is flat and featureless, except for the significant narrow absorption signature at the sodium doublet, which can be explained by an atmosphere in solar composition with clouds at 1 mbar. A cloud-free atmosphere is stringently ruled out. By assessing the absorption depths of sodium in various bin widths, we find that temperature increases towards lower atmospheric pressure levels, with a positive temperature gradient of 0.88 +/- 0.65 K km(-1), possibly indicative of upper atmospheric heating and a temperature inversion. |
| WOS关键词 | TRANSMISSION SPECTROSCOPY ; HD 189733B ; GIANT PLANETS ; LIGHT CURVES ; HEAVY-ATOMS ; SPECTRA ; ESCAPE ; MODEL ; IONOSPHERE ; AERONOMY |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000400754000155 |
| 出版者 | EDP SCIENCES S A |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/23057]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Chen, G. |
| 作者单位 | 1.Inst Astrofis Canarias, Via Lactea S-N, Tenerife 38205, Spain 2.Univ La Laguna, Dept Astrofis, San Cristobal la Laguna, Spain 3.Chinese Acad Sci, Purple Mt Observ, Key Lab Planetary Sci, Nanjing 210008, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, G.,Palle, E.,Nortmann, L.,et al. The GTC exoplanet transit spectroscopy survey VI. Detection of sodium in WASP-52b's cloudy atmosphere[J]. ASTRONOMY & ASTROPHYSICS,2017,600:6. |
| APA | Chen, G.,Palle, E.,Nortmann, L.,Murgas, F.,Parviainen, H.,&Nowak, G..(2017).The GTC exoplanet transit spectroscopy survey VI. Detection of sodium in WASP-52b's cloudy atmosphere.ASTRONOMY & ASTROPHYSICS,600,6. |
| MLA | Chen, G.,et al."The GTC exoplanet transit spectroscopy survey VI. Detection of sodium in WASP-52b's cloudy atmosphere".ASTRONOMY & ASTROPHYSICS 600(2017):6. |
入库方式： OAI收割
来源：紫金山天文台
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