NDLI: Extended atmospheres of outer planet satellites and comets (Document No: 19880021188)

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Extended atmospheres of outer planet satellites and comets (Document No: 19880021188)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Combi, Michael R. Smyth, William H.
Copyright Year	1988
Description	In the third year of this 3-year project, research accomplishments are discussed and related to the overall objective. In the area of the distribution of hydrogen in the Saturn system, new Voyager UVS data have been discovered and are discussed. The data suggest that both Titan's hydrogen torus and Saturn's hydrogen corona play a major role in the circumplanetary gas source. Modeling analysis of this new data establishes a strong basis for continuing studies to be undertaken in a new NASA-sponsored project. In the area of the cometary atmospheres, observational data for H, O, C, and OH acquired with the Pioneer Venus Orbiter are evaluated and preliminary modeling analysis for some of the hydrogen Lyman-alpha data is presented. In addition, the importance of collisional thermalization in spatial properties and structure of the inner and extended comae of comets has been demonstrated using the recently developed particle trajectory model. The successful simulation by this model of the hydrogen Lyman-alpha image for Comet Kohoutec near perihelion, an extreme case for collisional thermalization, is particularly noteworthy.
File Size	2205434
Page Count	28
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19880021188
Archival Resource Key	ark:/13960/t4gn33g1x
Language	English
Publisher Date	1988-08-01
Access Restriction	Open
Subject Keyword	Lunar And Planetary Exploration Outer Planets Explorers Cometary Atmospheres Coronas Lyman Alpha Radiation Comet Nuclei Hydrogen Natural Satellites Interplanetary Gas Abundance Titan Saturn Atmosphere Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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