The ultraviolet dayglow at solar maximum. II - Photometer observations of N2 second positive (0, 0) band emission

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Dayglow, Emission Spectra, Nitrogen, Solar Spectra, Spectral Bands, Ultraviolet Spectra, Atmospheric Temperature, Maxima, Neutral Atmospheres, Oxygen Spectra, Particle Flux Density, Rocket-Borne Instruments, Spectral Energy Distribution, Stellar Models, Ultraviolet Spectrophotometers

Scientific paper

The N2 second positive, C3Πu-B3Πg, (0,0) band dayglow emission at 3371 Å was observed during solar maximum with a rocket-borne filter photometer, simultaneously with spectrometer observations of the far ultraviolet N2 and O dayglow spectrum. Modeling of the near ultraviolet dayglow spectrum indicates that the instrument also detected the N2 Vegard-Kaplan, A3Σu+-X1Σg+, (0,9) band. A spectral synthesis of these bands is used to derive emission intensities. The intensities are combined with the results of the analysis of the far UV observations reported by Meier et al. (next paper) to determine the topside neutral temperature and photoelectron flux. A synthetic spectrum of the two band systems in the wavelength region between 3000 and 4000 Å is presented.

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