Physics
Scientific paper
Feb 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984em%26p...30...63g&link_type=abstract
Earth, Moon, and Planets (ISSN 0167-9295), vol. 30, Feb. 1984, p. 63-74.
Physics
17
Abundance, Cn Emission, Comet Heads, Perihelions, Spectrophotometry, Swan Bands, Carbon, Comet Nuclei, Continuous Spectra, Emission Spectra, Molecular Spectra, Radiant Flux Density, Spectral Energy Distribution
Scientific paper
Spectrum scans have been obtained of the head of Comet Austin on six nights at heliocentric distances (r) from 0.70 to 0.87 AU. The useful spectral region is 330-750 nm. Strong emission features of CN (388 nm) and Swan band sequence of C2 (474, 516, and 563 nm) were identified. Weak emission features of CH + C2(436 nm), C2(600 nm), CN(420 nm) and CH + C3(405 nm) have also been found present. There is a change in the ratio of CN(388 nm) to C2(516 nm) emission strength with increasing heliocentric distance. An estimate of the CN and C2 abundances has been made and their production rates have been derived. The continuum of the comet is strongly reddened with reference to the sun. The continuum matches the scattered continuum of solar radiation according to the lambda-squared law (Mie scattering) closely.
Goraya P. S.
Rautela B. S.
Sanwal B. B.
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