Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987icar...69...29w&link_type=abstract
Icarus (ISSN 0019-1035), vol. 69, Jan. 1987, p. 29-32.
Astronomy and Astrophysics
Astronomy
4
Asteroids, Microwave Emission, Planetary Radiation, Superhigh Frequencies, Brightness Temperature, Centimeter Waves, Continuous Spectra, Gray Scale, Radiant Flux Density, Asteroids, Interamnia, Emissions, Centimeter Waves, Flux, Density, Dust, Temperature, Size, Diameter, Surface, Composition, Depth, Comparisons, Radio Methods, Earth-Based Observations, U Asteroids, Spectra, Eunomia, S Asteroids, Physical Properties, Astronomy
Scientific paper
Results are presented from a study of the 2 cm natural radio emissions from the class U asteroid 704 Interamnia. The study was performed with the NRAO VLA using 26 antennas in a compact hybrid configuration with base lengths from 0.1-2.2 km. The IF scans were centered at 14.97 GHz and 14.92 GHz. A brightness temperature plot is provided for 2 AU distance, assuming a 338 km diam for the asteroid. The scans revealed a surface dust layer at least 3 cm thick. Comparisons with spectra of 15 Eunomia, another rapidly rotating minor planet with a similar diameter reveals that this second object also has a surface dust layer a few centimeters thick.
Hobbs Richard W.
Lowman Paul D.
Webster William J. Jr.
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