Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997iraj...24...47c&link_type=abstract
Irish Astronomical Journal, 1997, 24(1), 47
Astronomy and Astrophysics
Astronomy
2
Scientific paper
We report the results of optical spectroscopic observations of comet C/1995 O1 (Hale-Bopp) obtained in June 1996 when the comet was at a heliocentric distance of R = 4.2 AU. Emission features due to the CN(0-0) and C3 bands are detected in the spectra. The mean flux detected from the CN(0-0) band at this time was (2.64 +/- 0.15) x 10^-14 ergs/s/cm^2. Monte-Carlo modelling of the nucleus outgassing gives a mean gas production rate Q(CN) = (2.8 +/- 0.2) x 10^26 molecules/s. Nightly variations in the outgassing rate of ~50% were detected.
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