Forbidden lines of the solar corona and transition zone - 975-3000 A

Details Forbidden lines of the solar corona and transition zone - 975-3000 A Forbidden lines of the solar corona and transition zone - 975-3000 A

Jun 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...214..898s&link_type=abstract

Astrophysical Journal, Part 1, vol. 214, June 15, 1977, p. 898-904.

Astronomy and Astrophysics

Astrophysics

136

Forbidden Transitions, High Temperature Plasmas, Plasma Spectra, Solar Corona, Spectrum Analysis, Ultraviolet Spectra, Doppler Effect, Fluorine, Solar Eclipses, Solar Wind

Scientific paper

Forbidden lines characteristic of plasmas at temperatures of 50,000 to 3 million K are observed in ATM UV spectra. Identifications, accurate wavelengths, ionization classes, intensities, and half-widths are presented. Coronal blends with He II at 1640 A are noted. Variations in nonthermal velocities with limb distance are observed. Doppler shifts in the coronal lines observed on the disk may be related to the solar wind. The coincidence of two lines with F IV(3P-5S) is evidence for atomic fluorine in the sun.

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