Some diatomic molecules from comet P/Halley's UV spectra near spacecraft flybys

Details Some diatomic molecules from comet P/Halley's UV spectra near spacecraft flybys Some diatomic molecules from comet P/Halley's UV spectra near spacecraft flybys

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...187..329w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 187, no. 1-2, Nov. 1987, p. 329-332. Previously announced in STAR as N87-26716

Astronomy and Astrophysics

Astrophysics

9

Abundance, Comet Nuclei, Halley'S Comet, Molecular Spectra, Ultraviolet Spectroscopy, Diatomic Molecules, Flyby Missions, Iue, Mass Spectrometers, Nitric Oxide, Sulfur, Sulfur Compounds

Scientific paper

The abundances of diatomic molecules seen in the UV both give clues to the parent compounds and help unravel the gas and ion mass spectrometry. From IUE spectra of comet Halley, the authors find upper limits on SH and CS+ column densities, and estimates of probable NO, S2, and SO. In particular, judged from the 226 nm γ-band, NO was relatively abundant at 2 - 8×1013cm-2 on March 9 - 14. The production rate of S2 was around 1027 molecules s-1 at that time, but both showed day-to-day variability by 2 - 3 times.

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