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Rusian text ignored
Publication year - 1976
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.19762970502
Subject(s) - stars , physics , astrophysics , abundance (ecology) , fishery , biology
The published data on the abundance determinations for magnetic Ap‐stars were considered critically. The traditional methods of curve of growth were shown to be unsufficient for quantitative analysis of the atmospheres of magnetic Ap‐stars due to inhomogeneous structure of the surface of these stars. Only qualitative results can be obtained by these methods. Correlations between overabundances of different elements are considered. Very distinct correlations exist between overabundances of Mn and Zr, between Fe and rare earths and others. No correlation could be found between overabundance of elements and T eff . The methods of determination of local abundances and the results obtained — overabundances of some elements in spots and underabundances of them out of spots ‐ are considered. The significanse of these data for the theory of chemical anomalies in magnetic Ap stars are mentioned.

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