Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979icar...39...65s&link_type=abstract
Icarus, vol. 39, July 1979, p. 65-68. Research supported by the Conselho Nacional de Pesquisas and Financiadora de Estudos e Pr
Astronomy and Astrophysics
Astronomy
Astronomical Photometry, Brightness, Comet Nuclei, Fourier Transformation, Visual Observation
Scientific paper
A variation of the area scanning technique is applied to the determination of the brightness of a cometary nucleus. The Fourier transformation of a scan of a narrow slit across comet Bradfield (1974 III) is fitted to a scan of a nearby comparison star to obtain the upper limit of the fraction of light corresponding to the starlike nucleus of the comet. The calculated brightness is found to correspond to a magnitude greater than or equal to 8.9 and a nuclear radius less than or equal to 12 km, in accordance with the results of Ney (1974), assuming Lambert's phase law and an albedo of 0.7.
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