气候变化领域集成服务门户(CCPortal): Detection of soft x-rays and a sensitive search for noble gases in comet Hale-Bopp (C/1995 O1)

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DOI	10.1126/science.277.5331.1488
	Detection of soft x-rays and a sensitive search for noble gases in comet Hale-Bopp (C/1995 O1)
	Krasnopolsky V.A.; Mumma M.J.; Abbott M.; Flynn B.C.; Meech K.J.; Yeomans D.K.; Feldman P.D.; Cosmovici C.B.
发表日期	1997
ISSN	0036-8075
起始页码	1488
结束页码	1491
卷号	277 期号:5331
英文摘要	An image of comet Hale-Bopp (C/1995 O1) in soft x-rays reveals a central emission offset from the nucleus, as well as an extended emission feature that does not correlate with the dust jets seen at optical wavelengths. Neon was found to be depleted in the cometary ice by more than a factor of 25 relative to solar abundance which suggests that ices in Hale-Bopp formed at or later experienced) temperatures higher than 25 kelvin. A helium line emission at a wavelength of 584 angstroms was detected and may be attributable to charge transfer of solar wind α particles in the cometary coma. Ionized oxygen and another helium line contribute to an emission observed at 538 angstroms.
英文关键词	helium; oxygen; comet Hale-Bopp; noble gas; X-ray; article; astronomy; electron; image analysis; optics; photon; priority journal; radiation physics; telecommunication; ultraviolet radiation; X ray; Cosmic Dust; Helium; Ice; Meteoroids; Neon; Oxygen; Temperature; X-Rays
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/244401
作者单位	Catholic University of America, Washington, DC 20064, United States; NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States; Ctr. Extreme Ultraviolet Astrophys., Berkeley, CA 94720, United States; Institute for Astronomy, Honolulu, HI 96822, United States; Jet Propulsion Laboratory, Pasadena, CA 91109, United States; Johns Hopkins University, Baltimore, MD 21218, United States; Ist. Fisica Spazio Interplanetario, CNR, 00044 Frascati, Italy
推荐引用方式 GB/T 7714	Krasnopolsky V.A.,Mumma M.J.,Abbott M.,et al. Detection of soft x-rays and a sensitive search for noble gases in comet Hale-Bopp (C/1995 O1)[J],1997,277(5331).
APA	Krasnopolsky V.A..,Mumma M.J..,Abbott M..,Flynn B.C..,Meech K.J..,...&Cosmovici C.B..(1997).Detection of soft x-rays and a sensitive search for noble gases in comet Hale-Bopp (C/1995 O1).Science,277(5331).
MLA	Krasnopolsky V.A.,et al."Detection of soft x-rays and a sensitive search for noble gases in comet Hale-Bopp (C/1995 O1)".Science 277.5331(1997).