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	Peter van de Kamp - Wikipedia, the free encyclopedia
		Piet van de Kamp (December 26, 1901 – May 18, 1995), known as Peter van de Kamp in the United States, was a Dutch-American astronomer.
		Piet van de Kamp, or Peter as he was called in America, arrived at the University of Virginia on March 1, 1923 from the Astronomical Laboratory of Groningen, the Netherlands for a year's residence.
		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 the Yale University Observatory Southern Station in Johannesburg, South Africa.
	en.wikipedia.org /wiki/Peter_van_de_Kamp (514 words)

	An "Onward Spirit": A Brief History of Swarthmore College
		Van de Kamp was already well known in the field for his work in astrometry, the precise measurement of the positions of stars.
		Van de Kamp performed the piano accompaniment for the films and composed tunes that he named after the stars he observed.
		Peter Schickele, a member of the Class of 1957, composed "The Easy Goin' P.V.D.K. Ever-Lovin' Rag" for van de Kamp's 70th birthday, and in 1980 the International Astronomical Union named an asteroid for him.
	www.swarthmore.edu /news/history/1963.html (306 words)

	Van der Kamp, Peter (1901-1955)
		In 1963, van der Kamp claimed that a giant planet, about 11 times the mass of Jupiter, was in a 24-year orbit around Barnard's Star,
		In particular, Robert Harrington pointed out that all of the "wobbles" supposedly caused by van der Kamp's planets were of an identical form, suggesting a systematic instrumentation effect.
		Though the planetary discoveries claimed by van der Kamp and his contemporaries at Sproul were all subsequently rejected, van der Kamp's optimism in general has been vindicated.
	www.daviddarling.info /encyclopedia/V/vanderKamp.html (411 words)

	Barnards Star
		According to van de Kamp, a wobble in the movement of Barnard's Star was detected which he determined was the result of a body revolving around the star.
		According to van de Kamp the reason for the changes in the physical parameters of the two planets had to do in part with the reference stars he was using when examining the photographic plates.
		To his critics van de Kamp suggests that they (present researchers) spend the same amount of time with the same amount of plates and then, after that, he (van de Kamp) would be happy to talk with them.
	weblore.com /richard/barnard's_star.htm (3509 words)

	Barnard's star - Wikipedia, the free encyclopedia
		For many years from 1963 onwards, a substantial number of astronomers accepted a claim by Peter van de Kamp that he had detected a perturbation in the proper motion of Barnard's star consistent with its having one or more planets comparable in mass with Jupiter.
		When independent data were collected in the 1980s, this conclusion came to be disputed and the consensus is now that van de Kamp's claim was erroneous.
		During the period that the claim was accorded credibility, it contributed to the star's fame among the science fiction community and the star's adoption as a target for Project Daedalus (The British Interplanetary Society's proposal for an interstellar space probe).
	en.wikipedia.org /wiki/Barnard's_star (421 words)

	mobileCatalog: New Planets (Site not responding. Last check: 2007-10-18)
		Van de Kamp had been a professor at the University of Virginia for several years.
		Van de Kamp started taking data on Barnard\\\'s star in 1938, and continued taking data for roughly 25 years.
		So van de Kamp had tried to correct for all these things, but clearly the corrections were not sufficient.
	www.astrobio.net /cgi-bin/mobileCatalog.cgi?sid=1635&ext=.html (973 words)

	Salmon Publishing Online Bookshop \| Notes by Peter van de Kamp
		Reminiscent throughout of the poetry of the nineties, Van de Kamp's Notes is deceptively robust in its evocative arrangement of half-existent fragile moments.
		Van de Kamp manages to achieve a similar kind of solidity, or robustness, as mentioned earlier, by virtue of the deep resonances which materialise in the poems.
		Dawe's The Morning Train and van de Kamp's Notes are significant achievements, the one a kind of Prufock with the best part of a century's experience to buoy him, the other framing delicate hymns to the self.
	www.salmonpoetry.com /notes.html (863 words)

	Van Maanen's Star (Site not responding. Last check: 2007-10-18)
		Worse, van Maanen is now associated with the scientific dilemma of using widely accepted techniques that are, however, so susceptible to observer effects that even a careful investigator can be misled -- in van Maanen's case, into thinking that spiral galaxies were nebulae that had perceptible motions and so must be nearby (more).
		Van Maanen's Star has about seven-tenths of Sol's mass, but with only about 1.3 percent of of its diameter (Gatewood and Russell, 1974), and less than 2/10,000th of its brightness.
		While a possible astrometric perturbation with a 20-year period was detected by Peter van de Kamp (1971), Gatewood and Russell (1974) were unable to confirm any periodic regularities in the orbital motion of Van Maanen's Star although a large scatter in the residuals of one coordinate may indicate the presence of a second body.
	www.solstation.com /stars/v-maanen.htm (630 words)

	Press Release - Failed Search for Planet Orbiting Barnard's Star
		Later, Van de Kamp revised his analysis and asserted that Barnard’s Star had two smaller planets, with approximately 0.7 and 0.5 times the mass of Jupiter.
		Since Van de Kamp’s first announcement, a number of other searches using a variety of methods have failed to confirm his results. Ianna and Bartlett conducted an analysis of the substantial collection of photographic material relating to Barnard’s Star at the McCormick Observatory.
		Van de Kamp worked at the McCormick Observatory before going to Swarthmore College as director of Sproul Observatory in 1937.
	www.astro.virginia.edu /~jlb2j/ResearchFiles/BSPress01a.htm (890 words)

	wobble.html
		A native of Holland, Van de Kamp came to Swarthmore in 1937 and rapidly established himself as a witty, charismatic personality and virtuoso pianist.
		The star Van de Kamp chose for his planetary quest was a rather faint red dwarf called Barnard's Star after the astronomer who first charted its rapid motion, Edward Barnard.
		The successor Van de Kamp found, Professor Emeritus of Astronomy Wulff Heintz, was almost his opposite in style and temperament.
	www.swarthmore.edu /bulletin/mar01/wobble.html (1545 words)

	Search for Exoplanets
		Over the next couple of decades van de Kamp refined his calculations so that, by 1982, he asserted that there were two planets in circular orbits around Barnard's Star with masses of 0.7 and 0.5 that of Jupiter.
		Many astronomers tried to verify van de Kamp's work, only to find that there was either no wobble at all or a wobble caused by discrepancies in the methods used to produce the photographic plates.
		Peter van de Kamp died in 1995 still standing by his beliefs.
	www.hao.ucar.edu /public/research/stare/search.html (1496 words)

	Catalogue
		The survival of the original woodcuts of the printer's devices of Louis and Daniel Elzevier, Simon de Vries, and Abraham Wolfgang provided Peter Davidson with a point of departure for this fascinating and richly illustrated study into the background of the specific uses of trees in the devices of Dutch Renaissance printers and booksellers.
		Peter Davidson was born in Scotland in 1957 and was educated at Cambridge and York.
		It is published to accompany the exhibition Italiaanse prentkunst van de zestiende eeuw, which is held at the Prentenkabinet Leiden and the Leiden University Library from 1 April to 12 May 1999.
	www.apl.leidenuniv.nl /index.php3?c=8 (3369 words)

	ASP: The Search for Planets Around Other Stars
		In 1963, Peter van de Kamp, then director of Swarthmore College's Sproul Observatory, announced that, based on an analysis of its motion, Barnard's Star had an unseen companion.
		Van de Kamp estimated that the companion was 50 percent heavier than Jupiter, much too small to be a star.
		Van de Kamp still believes in his perturbations and his two-planet interpretation.
	www.astrosociety.org /education/publications/tnl/19/19.html (2583 words)

	Bob Harrington Obituary
		At Swarthmore he naturally came under the influence of Peter van de Kamp and Sara Lippincott of Sproul Observatory, and consequently was well-schooled in the classical techniques of photographic astrometry, including observing with the 60cm refractor, as well as measuring and reducing the results.
		In 1962 Bob accompanied van de Kamp to a summer institute at Wesleyan University, where he performed the duties of a teaching assistant, and where he met W.H. Jeffreys, then a graduate student, who was soon to become Bob's thesis advisor.
		Considerations on the stability of the solar system led Bob to collaborate with T.C. Van Flandern in studies of the dynamical evolution of its satellites, and to an eventual search for "Planet X", conjectured to lie beyond Pluto and to be responsible for small, unexplained, residuals in the orbits of Uranus and Neptune.
	ad.usno.navy.mil /wds/history/harrington.html (907 words)

	Untitled Document
		The use of p-adic numbers in calculating symmetries of evolution equations, Peter H. van der Kamp, proceedings `Symmetry in Nonlinear Mathematical Physics 2001’, 151—155, 2002.
		Classification of Integrable B-equations, Peter H. van der Kamp, Journal of Differential Equations 202, 256—283, 2004.
		Evolution of curvature invariants and lifting integrability, Elizabeth L. Mansfield and Peter H. van der Kamp, IMS Technical report UKC/IMS/04/31, to be published in Geometry and Physics, 2004.
	www.wiskun.de /Peter.html (2076 words)

	Piet van de Kamp (Site not responding. Last check: 2007-10-18)
		Piet van de Kamp, or Peter as he was called in America, arrived at the University of Virginia on March 1, 1923 from the
		Van de Kamp returned October 1, 1925 to the title of Instructor and promised new living quarters.
		Van de Kamp and Vyssotsky spent eight years measuring 18,000 proper motions.
	www.astro.virginia.edu /research/observatories/26inch/history/vandekamp.html (495 words)

	lamonitor.com: The Online News Source for Los Alamos
		An astronomer who compiled a 24-year sequence of photographic plates of Bernhard's Star, Van de Kamp thought he could see a sun wobbling under the gravitational influence of a heavy planet.
		Bernard's Star may yet be found to have planets, but the one Van de Camp thought he had identified turned out to be false, the discrepancies of an imprecise measurement.
		When a graduate student came along with a more accurate system, Van de Kamp's discovery was discredited, but the planet chase had just begun.
	www.lamonitor.com /articles/2005/06/01/headline_news/news04.txt (701 words)

	Extrasolar Planets
		In August of the same year another article was published by van de Kamp in the Astronomical Journal (8) stating that while reconsidering the photographic plates in his possession, there were not one but two planets revolving around Barnard's Star.
		15 In 1985, a few years after van de Kamp published his definitive and last paper on the subject 10, a Govert Schilling from Utrecht, The Netherlands 16 published the account of an interview with van de Kamp.
		Van de Kamp uncovered information that indicates a wobble in the star's proper motion.
	www.public.asu.edu /~sciref/exoplnt.htm (15809 words)

	Van de Kamp Peter 1901 Oral history interview with Peter Van de Kamp, 1977 April 9 and 1979 March 18. AIP International ...
		Van de Kamp Peter 1901 Oral history interview with Peter Van de Kamp, 1977 April 9 and 1979 March 18.
		van Rhijn, Pieter J. Vyssotsky, A. Williams, Emma.
		Oral history interview with Peter Van de Kamp, 1977 April 9 and 1979 March 18.
	www.aip.org /history/catalog/icos/4929.html (190 words)

	Search for Other Worlds (Site not responding. Last check: 2007-10-18)
		Meanwhile, van de Kamp, himself director of Sproul Observatory, had been making high resolution photographic plates of Barnard's Star, the second nearest star system to our own, located only 6.0 light years away.
		During the 1960's and 1970's, van de Kamp re-examined his data on a number of occasions.
		It is now commonly held that the wobbling effect observed by van de Kamp was probably due to imperfections of the Sproul telescope, on account that new research with better instrumentation has not been able to duplicate his results.
	www.armandocaussade.com /astronomy/other_worlds.html (4726 words)

	Willem Jacob Luyten, March 7, 1899—November 21, 1994 \| By Arthur Upgren \| Biographical Memoirs
		Luyten's thesis was based on 13,500 visual observations of variable stars, some of which he made in high school and others with the 6-inch refractor at the Leiden Observatory.
		His Dutch predecessors--especially Kapteyn, van Rhijn, and his Danish mentor at Leiden, Ejnar Hertzsprung--picked up about where Sir William Herschel left off a century earlier in the study of the stellar makeup of the Milky Way.
		On this he would cite a rule common to astronomers of his generation and all but forgotten since, that the systematic errors could be assumed to be about one-fifth of the accidental errors from all sources.
	www.nap.edu /readingroom/books/biomems/wluyten.html (4612 words)

	Cornelis Johannes van Houten: biography and encyclopedia article (Site not responding. Last check: 2007-10-18)
		Cornelis Johannes van Houten (1920 – August 24 2002) was a Dutch astronomer (astronomer: A physicist who studies astronomy).
		He married fellow astronomer Ingrid Groeneveld (who became Ingrid van Houten-Groeneveld (Ingrid van Houten-Groeneveld: ingrid van houten-groeneveld is a dutch astronomer....
		[follow hyperlink for more...]) and shipped the plates to the van Houtens at Leiden Observatory (Leiden Observatory: the leiden observatory (sterrewacht leiden) is an astronomical observatory in the city...
	www.absoluteastronomy.com /reference/cornelis_johannes_van_houten (314 words)

	Barnard's Star (Site not responding. Last check: 2007-10-18)
		Until his death in 1995, Van de Kamp devoted most of his life (at at Sproul Observatory at (Swarthmore College) to analyzing over 2,000 plates of Barnard's Star that he and his students had taken from 1938 through 1981.
		Some astronomers suspected that van de Kamp's data were distorted by the cleaning and remounting of the telescope lens at Sproul, 25 years after he began his observations.
		In 2003, a team of astronomers reported on two and a half years of high-precision radial velocity observations of Barnard's star that set even stricter limits on any large planets in circular orbits around this small star (Kürster et al, 2003).
	www.solstation.com /stars/barnards.htm (1316 words)

	University of Delaware: RUDI HOLZAPFEL LETTERS TO ELLEN SHANNON-MANGAN
		His mother, Mona Trew Holzapfel, was an original member of the renowned "Bluebell Girls," the Parisian dance troupe founded in 1932 that continues to perform elaborate shows at the Lido de Paris.
		With a circle of other Mangan scholars, including Jacques Chuto, Peter Van de Kamp, Peter MacMahon, and Ellen Shannon-Mangan, Holzapfel has edited selections of Mangan's prose and poems for the Irish Academic Press.
		She is the author of James Clarence Mangan: a Biography (1996) and co-editor, with Holzapfel, Jacques Chuto, Peter Van de Kamp, and Peter MacMahon, of the Irish Academic Press Series The Collected Works of James Clarence Mangan, including Prose, 1832-1882; Poems, 1818-1912; and Selected Poems.
	www.lib.udel.edu /ud/spec/findaids/holzapf.htm (790 words)

	Irish Studies News - the Latest IASIL Newsletter
		Peter van de Kamp and IASIL's founding member and honorary life president A Norman Jeffares (1920-2005) have produced two new anthologies of Irish literature of the eigteenth and nineteenth centuries, published in October 2005 by Irish Academic Press.
		Jacques Chuto, Peter van de Kamp, and Ellen Shannon-Mangan, Editors, Selected Prose of James Clarence Mangan, Dublin and Portland, Oregon: Irish Academic Press, 2004.
		The purpose of this study is to contribute to a reevaluation of these important early works in the career of one of the twentieth century's most significant playwrights and to show that the novels can be considered his later drama of ideas in embryo.
	www.iasil.org /newsletter/archive/newsletter2005/pub.html (8413 words)

	LIEBREGTS (Site not responding. Last check: 2007-10-18)
		Peter Liebregts en Peter van de Kamp, Amsterdam/Atlanta GA (Rodopi), 1995.
		Peter Liebregts en Wim Tigges, Amsterdam/Atlanta GA (Rodopi), 1996.
		Karl Enenkel, Peter Liebregts en Betsy de Jong-Crane, Amsterdam/Atlanta GA (Rodopi), 1998.
	www.let.leidenuniv.nl /English/staff/liebregts/liebregts.html (258 words)

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