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High spectral resolution observations and kinematic modeling of the 1667 MHz hyperfine transition of OH in Comets Halley (1982i), Giacobini-Zinner (1984e), Hartley-Good (1985l), Thiele (1985m), and Wilson (1986l)High-sensitivity, high spectral resolution 18 cm observations of Comets Giacobini-Zinner, Halley, Hartley-Good, Thiele, and Wilson are used here to probe the kinematics of the coma gas of these comets. The day/night outgassing ratio for all these comets is 1.39 (0.13 or - 0.12), independent of gas productivity and heliocentric distance. It is found that the gas productivity of a comet plays a critical role in determining the coma kinematics for bright comets near the sun.
Document ID
19910031910
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Tacconi-Garman, L. E.
(Five College Radio Astronomy Observatory Amherst, MA, United States)
Schloerb, F. Peter
(Massachusetts, University Amherst, United States)
Claussen, M. J.
(U.S. Navy, Naval Research Laboratory, Washington DC, United States)
Date Acquired
August 15, 2013
Publication Date
December 1, 1990
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 364
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
91A16533
Funding Number(s)
CONTRACT_GRANT: NAGW-1483
CONTRACT_GRANT: NAGW-1405
Distribution Limits
Public
Copyright
Other

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