Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999mnras.308..228z&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 308, Issue 1, pp. 228-232.
Astronomy and Astrophysics
Astronomy
7
Scientific paper
Theoretical line intensity ratios involving Fexii transitions in the 186-201Å wavelength range are compared with observational data for five solar active regions, obtained by the RES-C spectroheliograph on the CORONAS-I mission. Generally good agreement is found between theory and observation, hence resolving discrepancies previously found in the comparison of calculations with active region and subflare spectra from the Solar EUV Rocket Telescope and Spectrograph (SERTS). However, the Fexii 190.06- and 201.12-Å lines are blended with Fex 190.04Å and Fexiii 201.13Å, respectively. In addition, a weak feature at ~197Å, tentatively identified as Fexii 196.87Å, does not appear to be due to this ion.
Keenan Francis P.
Kuzin Sergei V.
Pinfield David J.
Urnov A. M.
Zhitnik Igor A.
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