气候变化领域集成服务门户(CCPortal): Detection of the aromatic molecule benzonitrile (c-C6H5CN) in the interstellar medium

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DOI	10.1126/science.aao4890
	Detection of the aromatic molecule benzonitrile (c-C6H5CN) in the interstellar medium
	McGuire B.A.; Burkhardt A.M.; Kalenskii S.; Shingledecker C.N.; Remijan A.J.; Herbst E.; McCarthy M.C.
发表日期	2018
ISSN	0036-8075
起始页码	202
结束页码	205
卷号	359 期号:6372
英文摘要	Polycyclic aromatic hydrocarbons and polycyclic aromatic nitrogen heterocycles are thought to be widespread throughout the universe, because these classes of molecules are probably responsible for the unidentified infrared bands, a set of emission features seen in numerous Galactic and extragalactic sources. Despite their expected ubiquity, astronomical identification of specific aromatic molecules has proven elusive. We present the discovery of benzonitrile (c-C6H5CN), one of the simplest nitrogen-bearing aromatic molecules, in the interstellar medium. We observed hyperfine-resolved transitions of benzonitrile in emission from the molecular cloud TMC-1. Simple aromatic molecules such as benzonitrile may be precursors for polycyclic aromatic hydrocarbon formation, providing a chemical link to the carriers of the unidentified infrared bands.
英文关键词	benzene; benzonitrile; polycyclic aromatic hydrocarbon; chemical bonding; detection method; infrared radiation; molecular analysis; nitrogen; PAH; Article; astronomy; chemical analysis; chemical composition; chemical reaction; chemical structure; conformational transition; cosmological phenomena; infrared radiation; interstellar medium; priority journal; signal noise ratio; spectroscopy
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244710
作者单位	National Radio Astronomy Observatory, Charlottesville, VA 22903, United States; Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, United States; Department of Astronomy, University of Virginia, Charlottesville, VA 22904, United States; Astro Space Center, Lebedev Physical Institute Russian Academy of Sciences, Moscow, Russian Federation; Department of Chemistry, University of Virginia, Charlottesville, VA 22904, United States; School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, United States
推荐引用方式 GB/T 7714	McGuire B.A.,Burkhardt A.M.,Kalenskii S.,et al. Detection of the aromatic molecule benzonitrile (c-C6H5CN) in the interstellar medium[J],2018,359(6372).
APA	McGuire B.A..,Burkhardt A.M..,Kalenskii S..,Shingledecker C.N..,Remijan A.J..,...&McCarthy M.C..(2018).Detection of the aromatic molecule benzonitrile (c-C6H5CN) in the interstellar medium.Science,359(6372).
MLA	McGuire B.A.,et al."Detection of the aromatic molecule benzonitrile (c-C6H5CN) in the interstellar medium".Science 359.6372(2018).