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OH as a probe of the warm-water cycle in planet-forming disks

文献类型：期刊论文

作者Zannese, Marion24; Tabone, Benoît24; Habart, Emilie24; Goicoechea, Javier R.25; Zanchet, Alexandre25; Dishoeck, Ewine F. van26,27; Hemert, Marc C. van28; Black, John H.29; Tielens, Alexander G. G. M.26,30; Veselinova, A.31
刊名NATURE ASTRONOMY
出版日期2024
ISSN号2397-3366
DOI10.1038/s41550-024-02203-0
产权排序第15完成单位
文献子类Article; Early Access
英文摘要Water is a key ingredient for the emergence of life as we know it. Yet, its destruction and reformation in space remain unprobed in warm gas (T > 300 K). Here we detect with the James Webb Space Telescope the emission of the hydroxyl radical (OH) from d203-506, a planet-forming disk exposed to external far-ultraviolet (FUV) radiation. These observations were made as part of the Early Release Science programme PDRs4All, which is focused on the Orion bar. The observed OH spectrum is compared with the results of quantum dynamical calculations to reveal two essential molecular processes. The highly excited rotational lines of OH in the mid-infrared are telltale signs of H2O destruction by FUV radiation. The OH rovibrational lines in the near-infrared are attributed to chemical excitation by the key reaction O + H-2 -> OH + H, which seeds the formation of water in the gas phase. These results show that under warm and irradiated conditions, water is destroyed and efficiently reformed through gas-phase reactions. We infer that, in this source, the equivalent of Earth oceans' worth of water is destroyed per month and replenished. This warm-water cycle could reprocess some water inherited from cold interstellar clouds and explain the lower deuterium fraction of water in Earth's oceans compared with that found around protostars.
学科主题天文学
URL标识查看原文
出版地HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY
WOS关键词RATE COEFFICIENTS ; PHOTODISSOCIATION ; TRANSITION ; EMISSION ; EXCITATION ; COLLISIONS ; CHEMISTRY ; SPECTRA ; REGION
资助项目NASA[PID2021-122839NB-I00]; French National Centre for Space Studies (CNES); JWST; Programme National Physique et Chimie du Milieu Interstellaire of the French National Centre for Scientific Research; French National Institute for Earth Sciences and Astronomy; INC (Institut de Chimie)/INP (Institut de Physique); French Alternative Energies; Atomic Energy Commission; CNES; University of Western Ontario[PID2019-106110GB-I00]; Spanish Ministry of Science, Innovation and Universities (MCINN); Institute for Earth and Space Exploration, CSA[PID2020-113147GA-I00]; Institute for Earth and Space Exploration, CSA[PID2019-106235GB-I00]; European Research Council; Natural Sciences and Engineering Research Council of Canada[80NSSC22M0107]; MCINN; Japan Society for the Promotion of Science; Junta Castilla y Leon; European Social Fund[184018867]; Chinese Academy of Sciences (CAS); NASA from the Space Telescope Science Institute; San Jose State University Research Foundation[120219939]; Internal Scientist Funding Model of the Laboratory Astrophysics Directed Work Package at NASA Ames; German Research Foundation
WOS研究方向Astronomy & Astrophysics
语种英语
出版者NATURE PORTFOLIO
WOS记录号WOS:001176327500001
资助机构NASA[PID2021-122839NB-I00] ; French National Centre for Space Studies (CNES) ; JWST ; Programme National Physique et Chimie du Milieu Interstellaire of the French National Centre for Scientific Research ; French National Institute for Earth Sciences and Astronomy ; INC (Institut de Chimie)/INP (Institut de Physique) ; French Alternative Energies ; Atomic Energy Commission ; CNES ; University of Western Ontario[PID2019-106110GB-I00] ; Spanish Ministry of Science, Innovation and Universities (MCINN) ; Institute for Earth and Space Exploration, CSA[PID2020-113147GA-I00, PID2019-106235GB-I00] ; European Research Council ; Natural Sciences and Engineering Research Council of Canada[80NSSC22M0107] ; MCINN ; Japan Society for the Promotion of Science ; Junta Castilla y Leon ; European Social Fund[184018867] ; Chinese Academy of Sciences (CAS) ; NASA from the Space Telescope Science Institute ; San Jose State University Research Foundation[120219939] ; Internal Scientist Funding Model of the Laboratory Astrophysics Directed Work Package at NASA Ames ; German Research Foundation[NAS 5-03127] ; [PID2019-107115GB-C21] ; [PID2021-122549NB-C21] ; [101096293] ; [EDU/1508/2020] ; [101019751]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/26429]  
专题云南天文台_其他
作者单位1.Department of Physics, Faculty of Science and Engineering, Meisei University, Tokyo, Japan;
2.Institute for Earth and Space Exploration, University of Western Ontario, London, Canada;
3.Carl Sagan Center, SETI Institute, Mountain View, USA;
4.Yunnan Observatories, Chinese Academy of Sciences, Kunming, China;
5.Chinese Academy of Sciences South America Center for Astronomy, National Astronomical Observatories, CAS, Beijing, China;
6.Departamento de Astronomica, Universidad de Chile, Santiago, Chile;
7.Space Telescope Science Institute, Baltimore, USA;
8.Department of Astronomy, University of Michigan, Ann Arbor, USA;
9.ACRI-ST, Centre d’Etudes et de Recherche de Grasse (CERGA), Grasse, France;
10.INCLASS Common Laboratory, Grasse, France;
推荐引用方式
GB/T 7714		 Zannese, Marion,Tabone, Benoît,Habart, Emilie,et al. OH as a probe of the warm-water cycle in planet-forming disks[J]. NATURE ASTRONOMY,2024.
APA Zannese, Marion.,Tabone, Benoît.,Habart, Emilie.,Goicoechea, Javier R..,Zanchet, Alexandre.,...&Wolfire, Mark G..(2024).OH as a probe of the warm-water cycle in planet-forming disks.NATURE ASTRONOMY.
MLA Zannese, Marion,et al."OH as a probe of the warm-water cycle in planet-forming disks".NATURE ASTRONOMY (2024).

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