Astronomy and Astrophysics – Astronomy
Scientific paper
May 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...222..333l&link_type=abstract
Astrophysical Journal, Part 1, vol. 222, May 15, 1978, p. 333-341.
Astronomy and Astrophysics
Astronomy
35
Chromosphere, Line Spectra, Oso-8, Solar Spectra, Solar Temperature, Atmospheric Heating, Carbon, Emission Spectra, Fine Structure, Lyman Spectra, Spaceborne Astronomy, Stellar Models, Temperature Distribution, Ultraviolet Spectra
Scientific paper
The temperature structure of the upper chromosphere is investigated using center-to-limb measurements of the C II resonance lines at 1335 A from the University of Colorado spectrometer aboard OSO 8. Spectrum synthesis of these lines shows them to be extremely sensitive to the temperature and the physical extent of the 20,000 K plateau proposed by Vernazza et al (1973). Hydrostatic equilibrium models of the quiet chromosphere are computed to obtain theoretical spectra of the Lyman lines and continuum as well as the center-to-limb behavior of the C II lines. Good agreement is found with observations for a plateau at 16,500 K with about 25% more material than that of Vernazza et al.
Chipman Eric G.
Lites Bruce W.
Shine Richard A.
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