Other
Scientific paper
Oct 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icar...64...11h&link_type=abstract
Icarus (ISSN 0019-1035), vol. 64, Oct. 1985, p. 11-19. NASA-supported research.
Other
78
Astronomical Photometry, Comets, Interplanetary Dust, Albedo, Gas Evolution, Light Scattering, Perihelions, Refractivity, Size Distribution, Thermal Emission, Comets, Comae, Dust, Short-Period Comets, Churyumov-Gerasimenko, Infrared, Wavelengths, Production Rates, Gases, Optical Properties, Grains, Albedo, Earth-Based Observations, Telescope Methods, Photometry, Thermal Properties, Emissions, Size, Distribution, Scattering, Brightness, Refractive Index
Scientific paper
IR emission from the dust comet of Comet C-G was monitored at 1-20 microns with the 3-m NASA Infrared Telescope Facility at Mauna Kea, Hawaii during its perihelion passage from September 1982 to March 1983. The maximum dust production rate of approximately 200,000 g/sec was found to occur approximately one month after perihelion. It was also found that no obvious 1-micron silicate feature was present at 1.33 AU preperihelion, and that the ratio of dust/gas production was higher in other short-period comets observed in the infrared, particularly preperihelion. The low albedos derived for the dust grains (less than 0.05 micron) are noted to be plausible for mineral mixtures expected in cometary grains.
Bregman Jesse D.
Gradie Jonathan
Hanner Martha S.
Lebofsky Larry
Lester Dan F.
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