Radio and infra-red observations of Comet Austin 1989CI

Details Radio and infra-red observations of Comet Austin 1989CI Radio and infra-red observations of Comet Austin 1989CI

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990esasp.315..209c&link_type=abstract

In ESA, Formation of Stars and Planets, and the Evolution of the Solar System p 209-211 (SEE N91-18922 10-90)

Astronomy and Astrophysics

Astronomy

Comet Tails, Comets, Infrared Astronomy, Radio Astronomy, Comet Heads, Comet Nuclei, Cosmic Dust, Infrared Photometry, Stellar Evolution

Scientific paper

Comet Austin was observed at 1100 and 1300 microns using JCMT (James Clerk Maxwell Telescope) and parallel 10 micron photometry was performed on the comet using the NASA IRTF telescope at Mauna Kea. For millimeter observations point to point photometry maps were generated and these were used in conjunction with the 10 micron measurements, to determine various physical parameters such as the equilibrium temperature, dust production rate and gas to dust ratio for this comet. Using the millimeter maps the number of larger cometary dust grains (greater than 100 micros) is estimated. When this is compared to the total number of dust particles in the coma it is found that most of the mass lies within these particle ranges.

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