Comet Halley - IR photometry prior to perihelion

Details Comet Halley - IR photometry prior to perihelion Comet Halley - IR photometry prior to perihelion

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pazh...13..149t&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 13, Feb. 1987, p. 149-154. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

1

Astronomical Photometry, Halley'S Comet, Infrared Astronomy, Perihelions, Colorimetry, Flux Quantization, Spectral Energy Distribution

Scientific paper

Ground-based IR observations (1.25-5.0 microns) of Comet Halley at heliocentric distances of 2.3-0.7 AU are discussed. In December 1985, the energy distribution in the 0.36-5 micron spectral range was obtained. The observed color temperatures in the 3.5-5 micron region are higher than equilibrium black-body ones at the same heliocentric distances, indicating the existence of small absorbing particles (less than 0.5 micron).

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