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Sulphur compounds in cometary IUE spectraFrom a study of cometary IUE spectra, a tentative identification of bands of the B-X systems of the SO molecule in the comet IRAS-Araki-Alcock in the 2200-2400 A region is reported, and it is suggested that sulphur compounds are more prevalent in comets than has been previously realized. S(+) and possibly SH are evident in comet Halley spectra, and new bands in the (A-X) system of CS and the (B-X) system of S2 are identified. The present results throw doubts on previous assessments of dust abundances from scattered continua in the 2900-3000 A region. The relatively strong abundance of S2 compared to OH in the Cernis and Bowell comets suggests that S2 is not well mixed and is not bound in H2O-ice.
Document ID
19880025126
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Krishna Swamy, K. S.
(NASA Ames Research Center Moffett Field, CA; Tata Institute for Fundamental Research, Bombay, India)
Wallis, M. K.
(University College Cardiff, United Kingdom)
Date Acquired
August 13, 2013
Publication Date
September 15, 1987
Publication Information
Publication: Royal Astronomical Society, Monthly Notices
Volume: 228
ISSN: 0035-8711
Subject Category
Astrophysics
Accession Number
88A12353
Distribution Limits
Public
Copyright
Other

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