Relative chemical abundances in different solar regions

Details Relative chemical abundances in different solar regions Relative chemical abundances in different solar regions

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...235..268m&link_type=abstract

Astrophysical Journal, Part 1, vol. 235, Jan. 1, 1980, p. 268-273.

Astronomy and Astrophysics

Astrophysics

20

Abundance, Chemical Composition, Solar Spectra, Sun, Carbon, Coronal Holes, Emission Spectra, Nitrogen, Oxygen, Silicon, Solar Activity, Solar Corona, Solar Flux Density, Solar Prominences, Spectroheliographs, Ultraviolet Radiation

Scientific paper

Intensities of extreme-ultraviolet emission lines formed in quiet sun regions, a coronal hole, an active region, and a prominence are used to derive chemical abundances of carbon, nitrogen, and oxygen relative to silicon in each region. For each element the relative abundance in each region agrees to within the estimated errors in the analysis. This means that the relative abundances are constant over a wide range of electron densities, emission measures, turbulent mass motions, and heights above the limb. Uncertainties in the atomic data appear to be the primary source of scatter in the derived abundances.

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