期刊
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
卷 54, 期 3, 页码 451-462出版社
OXFORD UNIV PRESS
DOI: 10.1093/pasj/54.3.451
关键词
methods : numerical; stars : abundances; stars : atmospheres; stars : fundamental parameters; stars : solar-type
A computer program has been developed for determining the fundamental model atmosphere parameters (T-eff, log g, nu(t), [Fe/H]) of solar-type stars, which is based on the equivalent widths for a well-chosen set of Fe I and Fe II lines. The basic principle of this method is to find the solution in the (T-eff, log g, nu(t)) space, which minimizes the sum of the dispersion of the Fe I abundances and the square of the Fe I-Fe II abundance difference. An application of this code to the observed solar equivalent widths turned out to yield satisfactory results, which are more or less consistent with the actual parameters of the Sun. The numerical performance of this approach as well as the errors involved in the resulting solutions are discussed.
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