Molecular Observations of Comet C/1996 B2 Hyakutake

Details Molecular Observations of Comet C/1996 B2 Hyakutake Molecular Observations of Comet C/1996 B2 Hyakutake

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.0918l&link_type=abstract

American Astronomical Society, DPS meeting #28, #09.18; Bulletin of the American Astronomical Society, Vol. 28, p.1091

Astronomy and Astrophysics

Astronomy

Scientific paper

We present observations of comet C/1996 B2 Hyakutake obtained with the Five College Radio Astronomy Observatory 14-m telescope. Emission from the HCN J=1-0 rotational transition was monitored over 28 individual days between February 26 and May 5, 1996. 3 mm transitions of CN, HC_3N, and CH_3OH were sought but not detected during the week surrounding perigee, March 23--30. The measurements were made with the 15-element QUARRY focal plane array. Spectra were averaged over an area with a 1' radius from the nucleus position. Integrated line intensities for observed lines are results of Gaussian fits, and for undetected lines are 3-sigma limits of the integrated intensity computed between +/- 1.2 km/s from the nuclear velocity. We present production rates as detections or upper limits for each observation of these molecules, and discuss the time variability of the HCN emission. The production rate of HCN was log(Q)=26.1 at perigee, assuming a 50 K LTE population.

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