- Peter van de Kamp
Piet Van de Kamp (December 26, 1901,
Kampen – May 18, 1995), known as Peter van de Kamp in theUnited States , was a Dutchastronomer who lived most of his life in theUnited States . He specialized inastrometry , studyingparallax andproper motion s of stars. In the 1960s he announced thatBarnard's star had a planetary companion based on observed "wobbles" in its motion, but this now seems likely to have been spurious.Life
Van de Kamp studied at the
University of Utrecht and started his professional career at the Astronomical Laboratory of Groningen working withPieter Johannes van Rhijn . In 1923 he left for theLeander McCormick Observatory at theUniversity of Virginia for a year's residence supported by the Draper Fund of the National Academy of Sciences. There he assistedSamuel Alfred Mitchell with his extensive stellar parallax program andHarold Alden with the lengthy Boss star project.The following year Van de Kamp went to the
Lick Observatory inCalifornia as a Kellogg fellow. There he received his Ph.D. from theUniversity of California in Astronomy in June 1925. Van de Kamp returned to McCormick on October 1, 1925 to take up the position left vacant by Harold Alden, who had just taken up the directorship of theYale University Observatory Southern Station inJohannesburg ,South Africa .His work consisted of assisting with the parallax program and continuing the proper motion work that he and Alden had begun. Van de Kamp and
Alexander N. Vyssotsky spent eight years measuring 18,000 proper motions. He did additional, smaller projects individually, including an investigation for general and selective absorption of light within the Galaxy.Van de Kamp was also a very talented
musician . He helped to organize anorchestra in Charlottesville, which he conducted and included fellow astronomer Vyssotsky. He also composedmusic , both for the orchestra and for thepiano . His unpublished "Lullaby" can be found at the Music Library at the University of Virginia. At Swarthmore Van de Kamp performed withPeter Schickele , a.k.a.P. D. Q. Bach , and made several films of Schickele's student performance.Barnard's Star
In the spring of 1937, van de Kamp left McCormick Observatory to take over as director of
Swarthmore College 'sSproul Observatory . He made observations ofBarnard's Star and in the 1960s reported a periodic "wobble" in its motion, apparently due to a planetary companion. It was not until several decades had passed that a consensus had formed that this had been a spurious detection. [ [http://www.public.asu.edu/~sciref/exoplnt.htm George H. Bell: "The Search for the Extrasolar Planets: A Brief History of the Search, the Findings and the Future Implications"] ] [ [http://www.astrobio.net/news/article1635.html Astrobio.net: "The Barnard's Star Blunder"] ] [ [http://weblore.com/richard/barnard's_star.htm Weblore.com: "Barnard’s Star and the Detection of Extrasolar Planets"] ] . Astronomers George Gatewood and Heinrich Eichhorn using data obtained with the [http://www.pitt.edu/~aobsvtry/thaw.html Thaw Refractor] telescope of the University of Pittsburgh (Pennsylvania, USA) detected a change in the color-dependent image scale of the telescope used by Van de Kamp in his study; this apparently occurred after the objective lens was removed, cleaned, and replaced. Hundreds more stars showed "wobbles" like Barnard's when photographs before and after cleaning were compared - a virtual impossibility.References
*cite journal|title= Peter van de Kamp and His "Lovely Barnard's Star|author=Schilling, G.|journal=Astronomy|volume= 13|pages= 26–28
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*External links
* [http://www.daviddarling.info/encyclopedia/V/vanderKamp.html Biography]
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