Terrestrial FeO Continuum Emission Observed in Sky Spectra

Astronomy and Astrophysics – Astronomy

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Scientific paper

The terrestrial continuum emission in the visible spectral region has often been studied by both astronomers and aeronomers, in order to clarify backgrounds and the nature of the emissions. New observations from the ESI spectrograph on the Keck II telescope, as well as from the OSIRIS/Odin spectrograph and orbiter, have established that a major component of the emission originates with the FeO molecule [Evans et al., 2010]. This quasi-continuum peaks at 5950 A and extends from 5000 A well into the infrared. The identity has been demonstrated by comparison with meteor trains and laboratory measurements [Jenniskens et al., 2000]. Early studies of the continuum show consistency with the FeO emission as presently observed [Gadsden and Marovich, 1973]. Analysis of spectra from Kitt Peak [Neugent and Massey, 2010] demonstrates the great similarity between FeO emission in a clean atmosphere and high pressure sodium lamp emission in a polluted atmosphere. This research was supported by NSF Aeronomy under Grant ATM-0637433
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Evans, W.F.J., et al., Geophys. Res. Lett. [in press, 2010]
Gadsden, M. and E. Marovich, J. Atm. Terr. Phys., 35, 1601-1614 [1973]
Jenniskens, P., et al., Earth, Moon and Planets, 82-83, 429-434 [2000]
Neugent, K.F. and P. Massey, PASP [in press, 2010]

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