Physics
Scientific paper
Feb 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978soph...56..237r&link_type=abstract
Solar Physics, vol. 56, Feb. 1978, p. 237-262. Research supported by the Nederlandse Organisatie voor Zuiver-Wetenschappelijk On
Physics
45
Barium, Line Spectra, Solar Spectra, Thermodynamic Equilibrium, Abundance, Atmospheric Models, Atmospheric Turbulence, Solar Atmosphere, Solar Limb
Scientific paper
The center-to-limb behavior of the Ba II lambda 4554 resonance line is analyzed with attention to data from the extreme limb, flash intensities, and profiles of the other Ba II lines. By means of an empirical NLTE method, observed profiles are compared with synthesized profiles based on a standard one-dimensional model atmosphere; the free parameters of this model are the line source function, the barium abundance, the collisional damping, and the atmospheric turbulence. Wing characteristics and the form of the empirically derived frequency-dependent line source function are discussed, and results for gf-values, solar barium abundance and isotope ratios, collisional damping, microturbulence, and macroturbulence are provided.
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