Journal ArticleDOI
Spectrophotometric study of comet Bradfield (1987s)
B. S. Rautela,B. B. Sanwal +1 more
TLDR
Spectrophotometric observations of the head of comet Bradfield (1987s) during three nights in 1987 are presented in this paper, where an estimate of the CN, C2, and C3 column densities and production rates have been made.Abstract:
Spectrophotometric observations of head of comet Bradfield (1987s) during three nights in 1987 are presented. An estimate of the CN, C
2, and C
3 column densities and production rates have been made.read more
Citations
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Journal ArticleDOI
Narrowband Filter Photometry of Five Comets
T.A. Ellis,J. S. Neff +1 more
TL;DR: In this article, photometric scans of the inner comae of P/Giacobini-Zinner, Sorrells, Bradfield, Furuyama, and P/Borrelly were obtained from 1985-1988.
Journal ArticleDOI
Evaluation of gas production rates in some comets
TL;DR: In this paper, the dependence of carbon-bearing molecular species on the heliocentric distance and the possible correlations among these radicals is studied and briefly discussed using recently derived fluorescence efficiencies.
Journal ArticleDOI
Spectrophotometry of Comet Bradfield (1987s)
D. K. Ojha,S. C. Joshi +1 more
TL;DR: In this article, column densities and production rates of C2 and CN were derived from spectral scans of Comet Bradfield (1987s) at heliocentric distance of 1.539 AU.
Journal ArticleDOI
Spectrophotometric study of comet Austin (1989 C1)
B. S. Rautela,B. B. Sanwal +1 more
TL;DR: Spectrophotometric observations of the head of comet Austin (1989 C1) during five nights in May 1990 are presented in this paper, where emission bands due to CN, C2 and C3 molecules have been identified.
Journal ArticleDOI
Scanner observations of comet Bradfield (1987 s)
B. B. Sanwal,B. S. Rautela +1 more
TL;DR: Spectrophotometric observations of the head of comet Bradfield (1987 s) during three nights in 1987 are presented in this paper, where an estimate of the CN, C2 and C3 column densities and production rates have been made.
References
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Journal ArticleDOI
Handbook of Mathematical Functions
Journal ArticleDOI
A re-evaluation of the Haser model scale lengths for comets
TL;DR: The scale lengths for the Haser (1957) model using new, photoelectric, high signal-to-noise ratio data on a variety of comets were examined in this article, where it was shown that the scale length for C2 and C3 compiled by A'Hearn and Newburn and Spinrad (1984) do not adequately represent the data for most of the comets considered.
Journal ArticleDOI
An augmented system of secondary standards for bright-star spectrophotometry.
TL;DR: Etalonnages du systeme spectrophotometrique de Hayes-Latham pour 21 etoiles standard secondaires are described in this paper, where the system is described as follows:
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Narrowband photometry of Comet P/Stephan-Oterma and the backscattering properties of cometary grains
TL;DR: The results of narrowband filter photometry of Comet P/Stephan-Oterma are presented in this paper, where a pronounced brightening of the comet's continuum near opposition is interpreted in terms of preferential backscattering by the cometary dust.
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Gas and dust in some recent periodic comets
TL;DR: In this paper, the authors used a narrow-band photometry of four recent periodic comets to estimate carbon radical production rates, gas-to-dust ratios, and the colors of the dust grains.