Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..91..435w&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 91, no. 2, April 1983, p. 435-444.
Astronomy and Astrophysics
Astrophysics
Abundance, Iron, Spectrum Analysis, Stellar Spectra, Weighting Functions, Hertzsprung-Russell Diagram, Line Spectra, Stellar Gravitation, Stellar Temperature
Scientific paper
The curve of growth abundance determinations is studied using the method of weighting functions. The magnitude of the error of abundance determination caused by changes in effective temperatures and gravitational accelerations in the range of their mean accuracy is examined for 15 stars in a wide range of spectral types. The analysis proceeds by adapting the curve of growth method for atomic iron, with values of oscillator strengths given by Kurucz and Peytremann (1975). Using abundances obtained from FE I lines, errors of abundances resulting from using Fe II lines from the same stars are evaluated. The results show that the accuracy of abundance determination is sometimes very small even for the most accurate method of curve of growth analysis, and that the value of the accuracy is related to the spectral type of the stars under investigation.
Bojanowski T.
Wiszniewski A.
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