Biobibliometric portrait of the astronomer Jan Hendrik Oort

Abstract

Jan Hendrik Oort is recognized as one of the greatest astronomers of the 20^th century. His 225 publications that appeared during 1922-1992 are analyzed. Most of the papers of the scientist (N= 170) are non-collaborative. Oort&rsquo;s first paper was published in 1922 at the age of 23. The period 1957-1961, when Oort was 58-62 years old, was his most productive period (nearly 5 papers per year). From the period of 7^th to 13^th quinquennium (age 53-87) he produced nearly 4 to 5 papers per year. In the byline of authors his status ranged from first to third and ninth. Oort&rsquo;s research team comprised of 67 collaborators. C. A. Muller and G.W. Rougoor were his leading collaborators. Most of his papers were published in journals, mostly emanating from Netherlands (N=71), <em>USA </em> (N=55) and UK (27) etc. The publication concentration is 2.27 and publication density 16.16. The most frequent keywords are Galaxy(ies) (N=23), Galactic System (N=17) and Structure (N=17). Finally, it is seen that the data set does not follow Bradford law.