G-factors of the SH (0-0) band and SH upper limit in Comet P/Brorsen-Metcalf (1989o)

Details G-factors of the SH (0-0) band and SH upper limit in Comet P/Brorsen-Metcalf (1989o) G-factors of the SH (0-0) band and SH upper limit in Comet P/Brorsen-Metcalf (1989o)

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992icar...97..303k&link_type=abstract

Icarus (ISSN 0019-1035), vol. 97, no. 2, June 1992, p. 303-306.

Astronomy and Astrophysics

Astronomy

2

Absorption Spectra, Astronomical Spectroscopy, Brorsen-Metcalf Comet, Hydrogen Sulfide, Spectral Bands, Franck-Condon Principle, Iue, Photodissociation

Scientific paper

A search for SH, the prime dissociative product of H2S, has been prompted by the microwave-band detection of H2S in Comets Austin and Levy. Attention is accordingly given here to g-factors for the A-X (0-0) band of SH as a function of heliocentric velocity at a heliocentric distance of 1 AU. An upper-limit production rate for SH relative to water of 0.017 is derived for the case of Comet P/Brorsen-Metcalf. A dissociative lifetime of 105 sec, at 1 AU heliocentric distance, and a heliocentric velocity of -28.5 km/sec, are also obtained.

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