Citation analysis of astronomical literature - Comments on citation half-lives

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomy, Documentation, Journals, Half Life, Papers, Statistical Analysis

Scientific paper

It is pointed out that half-life periods for the citation decay pattern given in scientometric studies of astronomical (and other) literature are more meaningful if citation counts are corrected for changes in the annual publication rate of the respective journals; such normalization is not a standard practice in citation analysis studies. Available 1984 Science Citation Index data are used to study the citation probibility as a function of age of the cited papers and to compute citation half-lives for papers published in a selection of astronomical journals. The current half-lives are compared to normalized values from the study of Abt (1981) from which it is concluded that citation behavior practices by astronomers have not changed appreciably over the last two decades. The citation half-life for astronomical papers is five years, similar to the standard for scientific papers in general.

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