Pieter Oosterhoff
id:
pieter-oosterhoff-200-11109631
title:
Pieter Oosterhoff
text:
Pieter Theodorus Oosterhoff was a Dutch astronomer. He was the co-administrator, along with Jan Oort, of the Leiden Observatory in the Netherlands. His published papers are primarily in regard to variable stars and photometry. He is most noted for his 1939 observation that there appear to be two populations of globular clusters based on the periodicities of their RR Lyrae variable stars. These two populations would come to be known as Oosterhoff groups after him. Between 1951 and 1952 he served
brand slug:
wiki
category slug:
encyclopedia
description:
Dutch astronomer (1904–1978)
original url:
https://en.wikipedia.org/wiki/Pieter_Oosterhoff
date created:
date modified:
2022-01-30T09:03:46Z
main entity:
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image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/9/9b/LeidenObservatory1961e.jpg","width":4012,"height":3304}
fields total:
13
integrity:
15