Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...338.1071h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 338, March 15, 1989, p. 1071-1093. Research supported by NSF.
Astronomy and Astrophysics
Astronomy
49
Comet Nuclei, Iras-Araki-Alcock Comet, Radar Astronomy, Radar Tracking, Spectral Bands, Encke Comet, Grigg-Skjellerup Comet, Thermal Emission, Comets, Radar Methods, Iras-Araki-Alcock, Earth-Based Observations, Comet Nuclei, Size, Diameter, Astronomy, Characteristics, Surface, Physical Properties, Composition, Period, Rotation, Particles, Grains, Distance, Abundance, Distribution, Spectra, Analysis, Roughness, Reflectivity, Polarization, Mass, Calculations, Ejection, Diagrams
Scientific paper
A detailed analysis and interpretation of the Arecibo S-band radar observations of Comet IRAS-Araki-Alcock 1983d are presented. The very high signal strengths are used to make an accurate determination of the shape of the echo spectrum in the two orthogonal senses of circular polarization. The narrow-band component is used to place constraints on the size, rotation, period, reflectivity, and roughness of the nucleus. Detailed analysis of the broadband component yields estimates of, or bounds on, the spatial extent, position, and mass of the particle cloud, as well as the effective size of the constituent particles.
Campbell Don B.
Harmon John K.
Hine Alice A.
Marsden Brian G.
Shapiro Irwin I.
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