Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982soph...76..109c&link_type=abstract
Solar Physics, vol. 76, Feb. 1982, p. 109-116. Research supported by the Norges Almenvitenskapelige Forskningsrad;
Astronomy and Astrophysics
Astronomy
2
Aluminum, Autoionization, Solar Atmosphere, Solar Spectra, Spectral Line Width, Thermodynamic Equilibrium, Calcium, Magnesium, Metal Ions, Solar Limb, Ultraviolet Astronomy
Scientific paper
Quiet sun observations obtained during a rocket flight of the Al I autoionization lines 1932 A and 1936 A at solar pointings ranging from mu = 0.73 out to the visible limb. Absolute intensities are estimated to be accurate to about + or - 20%. These lines weaken progressively with decreasing mu but never go into emission before finally disappearing with the continuum just beyond the visible solar limb. The observations are then compared with LTE line profiles computed through the quiet sun atmosphere of Vernazza et al. (1976). Several areas of disagreement between the synthetic and observed profiles are discussed.
Cook William J.
Kjeldseth Moe Olav
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