Physics
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250b.107c&link_type=abstract
In ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 2: Dust and Nucleus p 107-109 (SEE N
Physics
Brightness Distribution, Far Infrared Radiation, Halley'S Comet, Particle Size Distribution, Spectral Energy Distribution, Spectrophotometry, Airborne Equipment, Comet Nuclei, Space Observations (From Earth)
Scientific paper
Far infrared photometry of comet Halley was obtained from NASA's Kuiper Airborne Observatory. The brightness of the comet decreases by nearly a factor of two on the second day in phase with the variability observed in blue light by IUE during the same time period. The energy distribution also varies significantly with a shallower (cooler) spectrum on the second day indicating fewer small particles on that day. Observations 30 and 60 arcsec away from the nuclear condensation show lower 50 to 100 microns color temperatures on both dates. This is consistent with observations by Giotto and Vega which indicate a higher proportion of large particles away from the nucleus.
Campins Humberto
Ellis Benton Jr. H.
Harvey Paul Michael
Joy Marhshall
Lester Dan F.
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