Study of the A-X (0,0) band profile of CS in comets

Tarafdar, S. P. ; Krishna Swamy, K. S. (1993) Study of the A-X (0,0) band profile of CS in comets Astronomy and Astrophysics, 271 . pp. 326-334. ISSN 0004-6361

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Abstract

The synthetic rotational profile of the A-X (0,0) band of CS have been compared with the observed profile for comets Bradfield (1979 X), P/Giacobini-Zinner and P/Halley. The synthetic profile for a gas temperature 200 K gives a reasonably good fit to the observed profile for comets Bradfield (1979 X) and P/Giacobini-Zinner. However for comet P/Halley there is some disagreement in a small wavelength region. Extensive time-dependent calculations of various types have been carried out to see whether freshly formed molecules could remove the observed discrepancy. This is also associated with serious difficulties.

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