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Sublimation and reformation of icy grains in the primitive solar nebulaThe quantity of water ice that sublimates during the free fall of grains into the solar nebula from a surrounding interstellar cloud varies from over 90 percent of the grain mass as 30 AU from the nebular center to less than 10 percent at more than 100 AU. Virtually all the water that is sublimated ultimately recondenses, since the cold nebular gas lying beyond 10 AU is unable to hold more than a small portion as vapor. The return of most of the gas to solid phase near the nebular ambient temperature, of about 50 K, may result in at least two grain populations consisting, in one case, of unaltered interstellar grains which did not undergo sublimation, and in the other of water ice which cocondensed with more volatile gases at nebular ambient temperatures to yield volatile-rich amorphous phases.
Document ID
19920035363
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lunine, Jonathan I.
(Arizona Univ. Tucson, AZ, United States)
Engel, Steffi
(Arizona Univ. Tucson, AZ, United States)
Rizk, Bashar
(Arizona Univ. Tucson, AZ, United States)
Horanyi, Mihaly
(Arizona, University Tucson, United States)
Date Acquired
August 15, 2013
Publication Date
December 1, 1991
Publication Information
Publication: Icarus
Volume: 94
ISSN: 0019-1035
Subject Category
Astrophysics
Accession Number
92A17987
Funding Number(s)
CONTRACT_GRANT: NSF AST-89-04507
CONTRACT_GRANT: NAGW-2315
CONTRACT_GRANT: NAGW-1039
Distribution Limits
Public
Copyright
Other

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