气候变化领域集成服务门户(CCPortal): Interstellar polycyclic aromatic hydrocarbons and carbon in interplanetary dust particles and meteorites

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DOI	10.1126/science.237.4810.56
	Interstellar polycyclic aromatic hydrocarbons and carbon in interplanetary dust particles and meteorites
	Allamandola L.J.; Sandford S.A.; Wopenka B.
发表日期	1987
ISSN	0036-8075
起始页码	56
结束页码	59
卷号	237 期号:4810
英文摘要	Both interplanetary dust particles (IDPs) and meteorites may contain material that is similar to polycyclic aromatic hydrocarbons (PAHs). The Raman spectra of IDPs and meteorites show features that are similar in position and relative strength to interstellar infrared emission features that have been attributed to vibrational transitions in free, molecular-sized PAHs. The Raman spectra of some IDPs also show red photoluminescence that is similar to the excess red emission seen in some astronomical objects and that has also been attributed to PAHs and hydrogenated amorphous carbon. Moreover, a part of the carbonaceous phase in IDPs and meteorites contains deuterium to hydrogen ratios that are greater than those for terrestrial samples. Deuterium enrichment is expected in small free PAHs that are exposed to ultraviolet radiation in the interstellar medium. Taken together, these observations suggest that some of the carbonaceous material in IDPs and meteorites may have been produced in circumstellar dust shells and only slightly modified in interstellar space.
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/242798
作者单位	NASA Ames Research Center, Moffett Field, CA 94035, United States; Department of Earth and Planetary Sciences, McDonnell Center for the Space Sciences, Washington University, St. Louis, MO 63130, United States
推荐引用方式 GB/T 7714	Allamandola L.J.,Sandford S.A.,Wopenka B.. Interstellar polycyclic aromatic hydrocarbons and carbon in interplanetary dust particles and meteorites[J],1987,237(4810).
APA	Allamandola L.J.,Sandford S.A.,&Wopenka B..(1987).Interstellar polycyclic aromatic hydrocarbons and carbon in interplanetary dust particles and meteorites.Science,237(4810).
MLA	Allamandola L.J.,et al."Interstellar polycyclic aromatic hydrocarbons and carbon in interplanetary dust particles and meteorites".Science 237.4810(1987).