What is the Parent of CH in the Coma of Comet C/1995 O1 (Hale-Bopp)?

被引：0
作者：
Anita L. Cochran
D. C. Boice
Edwin S. Barker
Celine Laffont
机构：
[1] The University of Texas,
[2] Southwest Research Institute,undefined
[3] The University of Texas,undefined
[4] Observatoire de Besançon,undefined
来源：
Earth, Moon, and Planets | 1997年 / 78卷
关键词：
Comets; chemistry; spectra;
D O I：
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学科分类号：
摘要：
The ratio of CH4/CO in comets is an important indicator of the region of their formation. However, it is difficult to measure the quantity of CH+. The Giotto Ion Mass Spectrometer experiment observed a quantity of CH+ which seemed inconsistent with the amount of CH+. Thus, it was proposed that a source of the CH+ was a distributed source in the dust. We tested this hypothesis by observing the CH emission strength in comet Hale-Bopp as a function of dustiness. We see no strong correlation between the dust and the gas. Thus, for Hale-Bopp,dust is unlikely to be a dominant source of CH.
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页码：85 / 91
页数：6
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  • [1] Allen M.(1987)Evidence for Methane and Ammonia in the Coma of Comet P/Halley Astr. and Ap. 187 502-512
  • [2] Delitsky M.(1994)Abundance and Origin of the CHn+ Ions in the Coma of Comet P/Halley Astr. and Ap. 290 318-323
  • [3] Huntress W.(1990)Distributed Coma Sources and the CH4/CO Ratio in Comet Halley Geophys. Res. Lett. 17 1813-1816
  • [4] Yung Y.(1987)Search for Methane in Comet P/Halley Astr. and Ap. 187 497-501
  • [5] Ip W.-I.(1988)Infrared Spectroscopic Observation of Methane in Comet P/Halley Astr. and Ap. 207 174-181
  • [6] Schwenn R.(1986)In Situ Gas and Ion Measurements at Comet Halley Nature 321 326-329
  • [7] Rosenbauer H.(1996)Detection of Abundant Ethane and Methane, along with Carbon Monoxide andWater, in Comet C/1996 B2 Hyakutake: Evidence for Interstellar Origin Science 272 1310-1314
  • [8] Shelley E.(1988)Cometary Gas and Plasma Flow with Detailed Chemistry Comp. Phys. Comm. 49 17-59
  • [9] Balsinger H.(1995)The High-Resolution Cross-Dispersed Echelle White-Pupil Spectrometer of the McDonald Observatory 2.7 m Telescope Pub. A.S.P. 107 251-264
  • [10] Geiss J.(1987)Cometary MHD and Chemistry Astr. and Ap. 187 339-350
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