Nightglow Spectral Lines: The HIRES and UVES Database

Details Nightglow Spectral Lines: The HIRES and UVES Database Nightglow Spectral Lines: The HIRES and UVES Database

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsa21a0340s&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SA21A-0340

Astronomy and Astrophysics

Astronomy

2415 Equatorial Ionosphere, 0310 Airglow And Aurora, 0360 Transmission And Scattering Of Radiation

Scientific paper

The terrestrial nightglow, from the ozone cut-off near 310 nm to the optical IR limit near 1050 nm, contains several thousand emission lines. A high-resolution atlas of 2800 lines has recently been published,[Hanuschik, 2003] collected with the UVES echelle spectrograph on the VLT Kueyen 8 m telescope at the European Southern Observatory Paranal site in Chile. No attempt was made to assign the lines. Using similar data from the HIRES echelle spectrograph on the Keck I telescope, we have assigned most of the lines appearing in the UVES atlas. In this presentation we compare the quality of the UVES and HIRES data, finding them to be comparable at wavelengths longer than 340 nm, with better data from UVES below that wavelength. The line positions compare very well, with average deviations in the UV on the order of 0.0007 nm. The new O2(c1Σ u^---b1Σ g^+) emission system,[Slanger et al., 2003] is prominent in both sets of spectra, and we demonstrate that many of its lines were measured almost half a century ago.[Chamberlain, 1958] This work was supported by NSF Aeronomy and NSF Astronomy Chamberlain, J.W., The Blue Airglow Spectrum, Astrophys. J. 128, 713--717, 1958. Hanuschik, R.W., A Flux-Calibrated High-Resolution Atlas of Optical Sky Emission from UVES, Astron. Astrophys. 407, 1157--1164, 2003. Slanger, T.G., P.C. Cosby, and D.L. Huestis, A New O2 Band System: The c1Σ u^---b1Σ g^+ Transition in the Terrestrial Nightglow, J. Geophys. Res. 108 (A2), 1089, 2003.

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