Airborne photometry of Comet Halley from 40 to 160 microns

Details Airborne photometry of Comet Halley from 40 to 160 microns Airborne photometry of Comet Halley from 40 to 160 microns

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.

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