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

doi:10.1038/s41550-024-02203-0

CORC > 云南天文台 > 中国科学院云南天文台 > 其他

	OH as a probe of the warm-water cycle in planet-forming disks
	Zannese, Marion 25; Tabone, Benoît 25; Habart, Emilie 25; Goicoechea, Javier R.24; Zanchet, Alexandre 24; Dishoeck, Ewine F. van 22,23; Hemert, Marc C. van 21; Black, John H.20; Tielens, Alexander G. G. M.19,23; Veselinova, A.18
刊名	NATURE ASTRONOMY
	2024
ISSN号	2397-3366
DOI	10.1038/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
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关键词	RATE COEFFICIENTS ; PHOTODISSOCIATION ; TRANSITION ; EMISSION ; EXCITATION ; COLLISIONS ; CHEMISTRY ; SPECTRA ; REGION
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]
内容类型	期刊论文
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.Chinese Academy of Sciences South America Center for Astronomy, National Astronomical Observatories, CAS, Beijing, China; 2.Centro de Astrobiología, CAB, CSIC-INTA, Madrid, Spain; 3.UK Astronomy Technology Centre, Royal Observatory Edinburgh, Edinburgh, UK; 4.LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, Meudon, France; 5.NASA Ames Research Center, Moffett Field, USA; 6.INCLASS Common Laboratory, Grasse, France; 7.ACRI-ST, Centre d’Etudes et de Recherche de Grasse (CERGA), Grasse, France; 8.Department of Astronomy, University of Michigan, Ann Arbor, USA; 9.Space Telescope Science Institute, Baltimore, USA; 10.Departamento de Astronomica, Universidad de Chile, Santiago, Chile;
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).