Pieter Oosterhoff: Difference between revisions
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{{Short description|Dutch astronomer (1904–1978)}} |
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[[File:LeidenObservatory1961e.jpg|thumb|Oosterhoff (1961)]] |
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He was the co-administrator, along with [[Jan Oort]], of the [[Leiden Observatory]] in the Netherlands. |
He was the co-administrator, along with [[Jan Oort]], of the [[Leiden Observatory]] in the Netherlands. |
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His published papers are primarily in regard to [[variable star]]s and [[photometry (astronomy)|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.<ref>{{cite journal | author=Oosterhoff, P. T. | title=Some remarks on the variable stars in globular clusters | journal=The Observatory | year=1939 | volume=62 | pages=104–109 | |
His published papers are primarily in regard to [[variable star]]s and [[photometry (astronomy)|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.<ref>{{cite journal | author=Oosterhoff, P. T. | title=Some remarks on the variable stars in globular clusters | journal=The Observatory | year=1939 | volume=62 | pages=104–109 | bibcode=1939Obs....62..104O }}</ref> These two populations would come to be known as ''Oosterhoff groups'' after him. |
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Between 1951 and 1952 he served as assistant general secretary of the [[International Astronomical Union]], and served as general secretary from 1952 until 1958. In 1954 he was one of twelve European astronomers who drafted a statement that would lead to the formation of the [[European Southern Observatory|ESO]]. |
Between 1951 and 1952 he served as assistant general secretary of the [[International Astronomical Union]], and served as general secretary from 1952 until 1958. In 1954 he was one of twelve European astronomers who drafted a statement that would lead to the formation of the [[European Southern Observatory|ESO]]. |
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The [[asteroid]] 1738 Oosterhoff is named after him. |
The [[asteroid]] [[List of minor planets: 1001–2000#738|1738 Oosterhoff]] is named after him. |
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==References== |
==References== |
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==External links== |
==External links== |
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*{{Commons category-inline}} |
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*{{cite web | date = 2000-11-01 | url = http://eaa.iop.org/index.cfm?action=summary&doc=eaa%2F3902%40eaa-xml | title = Oosterhoff, P Th (1904–78) | publisher = Institute of Physics Publishing | |
*{{cite web | date = 2000-11-01 | url = http://eaa.iop.org/index.cfm?action=summary&doc=eaa%2F3902%40eaa-xml | title = Oosterhoff, P Th (1904–78) | publisher = Institute of Physics Publishing | accessdate = 2006-06-08 }}{{dead link|date=January 2018 |bot=InternetArchiveBot |fix-attempted=yes }} |
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{{Authority control}} |
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{{Persondata <!-- Metadata: see [[Wikipedia:Persondata]]. --> |
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| NAME =Oosterhoff, Pieter Theodorus |
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{{DEFAULTSORT:Oosterhoff, Pieter Theodorus}} |
{{DEFAULTSORT:Oosterhoff, Pieter Theodorus}} |
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[[Category:1904 births]] |
[[Category:1904 births]] |
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[[Category:1978 deaths]] |
[[Category:1978 deaths]] |
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[[Category:Dutch astronomers]] |
[[Category:20th-century Dutch astronomers]] |
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[[Category:People from Leeuwarden]] |
[[Category:People from Leeuwarden]] |
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{{netherlands-scientist-stub}} |
{{netherlands-scientist-stub}} |
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{{Europe-astronomer-stub}} |
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[[it:Pieter Oosterhoff]] |
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[[nl:Pieter Oosterhoff]] |
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Latest revision as of 09:03, 30 January 2022
Pieter Theodorus Oosterhoff (30 March 1904, Leeuwarden - 14 March 1978, Leiden) 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.[1] These two populations would come to be known as Oosterhoff groups after him.
Between 1951 and 1952 he served as assistant general secretary of the International Astronomical Union, and served as general secretary from 1952 until 1958. In 1954 he was one of twelve European astronomers who drafted a statement that would lead to the formation of the ESO.
The asteroid 1738 Oosterhoff is named after him.
References
[edit]- ^ Oosterhoff, P. T. (1939). "Some remarks on the variable stars in globular clusters". The Observatory. 62: 104–109. Bibcode:1939Obs....62..104O.
External links
[edit]
Media related to Pieter Oosterhoff at Wikimedia Commons- "Oosterhoff, P Th (1904–78)". Institute of Physics Publishing. 2000-11-01. Retrieved 2006-06-08.[permanent dead link]
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