The SUMER Spectral Atlas of Solar Coronal Features
Werner Curdt (Max-Planck-Institut für Aeronomie)
Enrico Landi (Artep Inc., Naval Research Laboratory)
Uri Feldman (Hulburt Center for Space Research, Naval Research Laboratory)
A far-ultraviolet and extreme-ultraviolet (FUV, EUV) spectral atlas of the Solar Corona between 670 Å and 1609 Å in first order of diffraction has been derived from observations obtained with the SUMER (Solar Ultraviolet Measurements of Emitted Radiation) spectrograph on SOHO.
The atlas contains off-disc spectra of the quiescent corona, the corona above a coronal hole, the active corona and the flaring corona. The physical parameters of the coronal plasma are very different from those in the lower solar atmosphere, so the coronal spectrum includes a number
of emission lines, which are difficult to observe elsewhere. Most of the lines in the spectrum have been identified, some of them for the first time. A percentage of the weaker lines remains without identification.
The present atlas represents the most comprehensive and accurate line list for the solar corona in the 670-1609 Å wavelength range. This atlas also provides an excellent reference for astrophysical applications.
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