NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
airborne spectrophotometry of comet halley from 5 to 9 micronsSpectrophotometry from 5 to 9 microns (resolution = 0.02) of comet Halley was obtained from the Kuiper Airborne Observatory on 1985 Dec. 12.1 and 1986 April 8.6 and 10.5 UT. Two spectral features are apparent in all the observations, one from 5.24 to 5.6 microns, and the silicate emission feature which has an onset between 7 and 8 microns. There is no evidence for the 7.5 microns feature observed by the Vega 1 spacecraft; the large difference between the areal coverage viewed from the spacecraft and the airplane may explain the discrepancy. Color temperatures significantly higher than a blackbody indicate that small particles are abundant in the coma. Significant spatial and temporal variations in the spectrum show trends similar to those observed from the ground.
Document ID
19870016495
Document Type
Other
Authors
Campins, H.
(NASA Ames Research Center Moffett Field, CA, United States)
Bregman, J. D.
(NASA Ames Research Center Moffett Field, CA, United States)
Witteborn, F. C.
(NASA Ames Research Center Moffett Field, CA, United States)
Wooden, D. H.
(NASA Ames Research Center Moffett Field, CA, United States)
Rank, D. M.
(NASA Ames Research Center Moffett Field, CA, United States)
Cohen, M.
(NASA Ames Research Center Moffett Field, CA, United States)
Allamandola, Louis J.
(NASA Ames Research Center Moffett Field, CA, United States)
Tielens, Alexander G. G. M.
(California Univ. Berkeley., United States)
Date Acquired
September 5, 2013
Publication Date
December 1, 1986
Publication Information
Publication: ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 2: Dust and Nucleus
Subject Category
ASTROPHYSICS
Distribution Limits
Public
Copyright
Other