New model of iron spectra in the extreme ultraviolet and application to SERTS and EUV observations: A solar active region and capella

Details New model of iron spectra in the extreme ultraviolet and application to SERTS and EUV observations: A solar active region and capella New model of iron spectra in the extreme ultraviolet and application to SERTS and EUV observations: A solar active region and capella

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apjs...97..551b&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 97, no. 2, p. 551-570

Astronomy and Astrophysics

Astronomy

150

Emission Spectra, Emissivity, Extreme Ultraviolet Radiation, Iron, Line Spectra, Mathematical Models, Ultraviolet Astronomy, Ultraviolet Spectra, Excitation, Extreme Ultraviolet Explorer Satellite, Ionization, Stellar Coronas, Ultraviolet Spectrometers, Ultraviolet Telescopes

Scientific paper

We report new predictions for the EUV spectral emission of FeIX-FeXXIV, based on data now available from the Solar EUV Rocket Telescope and Spectrograph (SERTS) and the Extreme Ultraviolet Explorer (EUVE) spectrometers. The iron spectral emission model is the first result of a larger effort to revise the Raymond & Smith model and to update the atomic rates. We present here predicted emissivities for selected densities and temperatures applicable to various astrophysical plasmas. Comparisons of our predicted spectra with two recent observations provide important tests of the atomic data. They also test to some extent some basic assumptions of coronal emission codes: optically thin spectral lines and ionization equilibrium.

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