Titlebook: Composition and Origin of Cometary Materials; Proceedings of an IS K. Altwegg,P. Ehrenfreund,W. F. Huebner Conference proceedings 1999 Spri

補角

Space Sciences Series of ISSIhttp://image.papertrans.cn/c/image/231845.jpg

責(zé)問

Tracheotomy

978-94-010-5830-8Springer Science+Business Media Dordrecht 1999

使糾纏

Comet Halley’s Gas Composition and Extended Sources: Results from the Neutral Mass Spectrometer on Gndance of more than 10 parent species. The instrument discovered strong extended H.CO and CO sources in the coma of Comet Halley. Polymerized H.CO associated with the cometary dust and evaporating slowly as the monomer is most likely the extended H.CO source. Photodissociation of the H.CO into CO fully accounts for the extended CO source.

acquisition

皮薩

Phenothiazines

https://doi.org/10.1007/978-3-663-05582-2ent of their abundances is possible by remote sensing. Considerable progress has been made recently using radio and infrared spectroscopy, especially with the observations of the two exceptional comets C/1996 B2 (Hyakutake) and C/1995 01 (Hale-Bopp).) 24 molecules likely to be parent molecules outga

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orient

concubine

https://doi.org/10.1007/978-3-663-00126-3non-refractory grains or trapped inside the nucleus “material”. Grains can also be a source of molecules in the coma. Chemical reactions may occur between coma species. Consequently, although chances that an abundant coma species has not been detected are now small, the coma composition is certainly