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Simultaneous visible and near-infrared spectrophotometry of Comet Austin 1989c

Tegler, Stephen C. and Campinis, Humberto and Larson, Stephen and Kleine, Marvin and Kelly, Douglas and Rieke, Marcia (1992) Simultaneous visible and near-infrared spectrophotometry of Comet Austin 1989c. The Astrophysical Journal, 396 (2). pp. 711-716. ISSN 1538-4357

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Publisher’s or external URL: http://dx.doi.org/10.1086/171753

Abstract

Simultaneous visible and near-infrared spectra of Comet Austin were obtained wit the 1.5 m and 2.3 m telescopes of the University of Arizona Observatories on 1990 May 16. The visible spectrum obtained with the IHW spectrograph covers the 3126-9490 A wavelength interval, while the near-infrared spectrum obtained with the germanium spectrometer covers the 9036-12794 A wavelength interval. Simultaneous measurements of integrated band fluxes are presented for the CN B 2Sigma(+) - X 2Sigma(+) (violet) and A 2Pi - X 2Sigma(+) (red) systems. A CN spectrum and CN band flux ratios calculated from a fluoresence equilibrium model are also presented. From a comparison between the observed and calculated CN spectra and band flux ratios, it is found that red system oscillator strengths determined from recent ab initio calculations appropriately describe the radiative properties of CN molecules.

Item Type: Article
Publisher’s Statement: © 1992 The American Astronomical Society. Published in The Astrophysical Journal.
ID number or DOI: 10.1086/171753
Keywords: Astronomical Spectroscopy, Austin Comet, Near Infrared Radiation, Spectrophotometry, Visible Spectrum, Abundance, Carbon Isotopes, Cyanogen, Molecular Energy Levels, Oscillator Strengths
Subjects: Q Science > QB Astronomy
NAU Depositing Author Academic Status: Faculty/Staff
Department/Unit: College of Engineering, Forestry, and Natural Science > Physics and Astronomy
Date Deposited: 21 Dec 2015 17:26
URI: http://openknowledge.nau.edu/id/eprint/1850

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