Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989basi...17..114s&link_type=abstract
Astronomical Society of India, Bulletin (ISSN 0304-9523), vol. 17, Sept. 1989, p. 114-119.
Astronomy and Astrophysics
Astronomy
Comet Nuclei, Halley'S Comet, Optical Thickness, Astronomical Models, Chemical Composition, Cosmic Dust, Giotto Mission, Particle Size Distribution
Scientific paper
A new relation between the nuclear radius and the optical depth toward the nucleus of Comet Halley has been derived on the basis of the radial variation of the effective area of the grains along the Giotto trajectory in the coma. It is found that the expected optical depth toward the nucleus varies from 0.089 to 0.036 corresponding to the nuclear radius in the range 8 to 16 km.
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