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OH radio observations of comets P/Brorsen-Metcalf (1989o), Okazaki-Levy-Rudenko (1989r), Aarseth-Brewington (1989a1), and Austin (1989c1) at the Nancay radio telescopeThe 1667 MHz and 1665 MHz transitions of the OH radical were recently monitored in several comets with the Nancay radio telescope: P/Brorsen-Metcalf (1989o) (August 4 to October 31, 1989), Okazaki-Levy-Rudenko (1989r) (October 3 to December 2, 1989), Aarseth-Brewington (1989a1) (December 8 to 30, 1989), and Austin (1989c1) (February 15 to June 14, 1990). Present gas expansion measurements obtained from the analysis of the line shapes are presented and the long term variations of the water production rate, as measured from the OH radio lines. On October 13, 1989, the occultation of a background source by comet Okazaki-Levy-Rudenko (1989r) was fortuitously observed. A preliminary report of this observation is given. Further analysis of the data is continuing.
Document ID
19910011715
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bockelee-Morvan, D.
(Observatoire de Paris-Meudon)
Crovisier, J.
(Observatoire de Paris-Meudon)
Gerard, E.
(Observatoire de Paris-Meudon)
Bourgois, G.
(Observatoire de Paris-Meudon)
Date Acquired
September 6, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Southwest Research Inst., Workshop on Observations of Recent Comets (1990)
Subject Category
Astrophysics
Accession Number
91N21028
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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