Airglow continuum emission in the visible wavelength regime

Autor(en)

Stefanie Unterguggenberger, Stefan Noll, Wolfgang Kausch, B. Proxauf, Stefan Kimeswenger

Abstrakt

To probe dynamics and chemistry of the atmosphere at high altitudes (80-100 km), we need to understand airglow line and continuum emission. Accounting for the continuum emission is harder than for the emission lines. Gaining knowledge of the upper atmospheric continuum emission needs e.g. a proper subtraction of the other continuum components, and a very good subtraction of the other emission lines which requires a high spectral resolution. In this study, we want to focus on FeO continuum emission. FeO emits in the wavelength range from 0.5 to 0.72 m and probes an altitude of about 89 km. The altitude of the emission peak lies between those of OH (87 km) and NaD (92 km). Fe and Na are linked by their source, meteors, and their common reactant O3, which holds also for OH emission. Lidar and limb sounding studies provide measurements about the continuum contribution of the FeO and Fe density in the upper atmosphere, but for a more detailed analysis in terms of emission structure and variability a ground-based high resolution and high signal-to-noise spectrum would be preferable.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

Leopold-Franzens-Universität Innsbruck

Journal

Geophysical Research Abstracts

Band

17

ISSN

1029-7006

Publikationsdatum

03-2015

Peer-reviewed

Ja

ÖFOS 2012

103003 Astronomie, 103004 Astrophysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/airglow-continuum-emission-in-the-visible-wavelength-regime(fc328d2f-2d75-400d-a1e5-8c93130260b0).html