Physics
Scientific paper
Jul 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.2561b&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 13, p. 2561-2564
Physics
3
Planetology: Comets And Small Bodies: Composition, Planetology: Comets And Small Bodies: Remote Sensing, Planetology: Solar System Objects: Comets, Planetology: Solar System Objects: Extraterrestrial Materials
Scientific paper
The Ultraviolet Imager on the Polar spacecraft observed the neutral oxygen and carbon comae of Comet Hale-Bopp (C/1995 01) at far-ultraviolet wavelengths near perihelion on March 31 and April 2, 1997. The OI (1304) coma was circularly symmetric with a diameter of about 5 million km. The coma was smaller in the longer wavelength (1400-1600 Å and 1600-1800 Å) bands, which is probably due to fluorescence of neutral carbon at 1561 Å and 1657 Å. The production rate for O calculated from the observed OI (1304) flux was (9.8+/-2.5)×1030. Using this value the estimated production rate for OH was (8.9+/-2.5)×1030 and for H2O was (1.0+/-0.3)×1031.
Brittnacher M.
Elsen R.
Fox Nicole
Germany G. G.
Kang Junhai
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