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H2O(+) ions in comets: Comet Kohoutek (1973f) and comet Bradfield (1974b)The image tube Cassegrain slit spectra of comet Kohoutek and Bradfield calibrated and reduced to relative intensities are discussed. Monochromatic changes in the surface brightness for various neutral and ionized molecules are determined. The intensities of C2 and CN decreased approximately four times faster than the intensity change for the H2O(+) features. It is shown that the excitation mechanism for the observed H2O(+) bands is by fluorescent scattering of the incident solar radiation. The effects of solar activity on the photoionization rate of H2O in a comet are discussed. Observations of another bright comet at the time of maximum solar activity are needed to determine changes in band intensities of comet tail ions due to solar activity.
Document ID
19760013973
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Wehinger, P. (Tel-Aviv Univ. Ramat-Aviv, Tel-Aviv, Israel)
Wyckoff, S. (Tel-Aviv Univ. Ramat-Aviv, Tel-Aviv, Israel)
Date Acquired
August 8, 2013
Publication Date
January 1, 1976
Publication Information
Publication: NASA Goddard Space Flight Center The Study of Comets, Part 1
Subject Category
Astrophysics
Accession Number
76N21061
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19760013964Collected WorksThe study of comets, part 1
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