The statistical equilibrium and the 670.776- and 670.791-nm absorption lines of Li I in red-giant spectra - Methodology

Details The statistical equilibrium and the 670.776- and 670.791-nm absorption lines of Li I in red-giant spectra - Methodology The statistical equilibrium and the 670.776- and 670.791-nm absorption lines of Li I in red-giant spectra - Methodology

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991azh....68..776p&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 68, July-Aug. 1991, p. 776-781. In Russian.

Astronomy and Astrophysics

Astronomy

3

Absorption Spectra, Equilibrium Equations, Lithium, Red Giant Stars, Stellar Atmospheres, Stellar Spectra, Line Spectra, Photoionization, Statistical Analysis, Stellar Evolution

Scientific paper

A method for calculating the statistical equilibrium for lithium in the atmospheres of red giants without LTE is analyzed. The cool-atmosphere opacity circulation method (absorption mean) is investigated. The analysis makes it possible to determine the role played by free-bound transitions from different levels in establishing the lithium ionization balance in the atmospheres of late stars.

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