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Peter van de Kamp | |
|---|---|
 Peter van de Kamp circa 1973 | |
| Born | December 26, 1901 Kampen, Netherlands |
| Died | May 18, 1995 (aged 93) Amsterdam, Netherlands |
| Nationality | Dutch |
| Alma mater | University of Utrecht, University of California, Berkeley |
| Known for | Astrometry |
| Awards | Janssen Prize |
| Scientific career | |
| Fields | astronomy |
| Institutions | Sproul Observatory, University of Amsterdam |
Piet van de Kamp (December 26, 1901 – May 18, 1995), known as Peter van de Kamp in the United States, was a Dutch astronomer who lived in the United States most of his life. He was professor of astronomy at Swarthmore College and director of the college's Sproul Observatory from 1937 until 1972. He specialized in astrometry, studying parallax and proper motions of stars. He came to public attention in the 1960s when he announced that Barnard's star had a planetary system based on observed "wobbles" in its motion, but this is now known to be false.[1][2] On November 14, 2018, the Red Dots project announced that Barnard's star hosts an exoplanet at least 3.2 times as massive as Earth, though this does not match either of the planets he had claimed.[3] In 2021, even this planet's existence was questioned.[4]
- ^ Cite error: The named reference
Swathmorewas invoked but never defined (see the help page). - ^ Kurster, M.; et al. (2003). "The low-level radial velocity variability in Barnard's star (= GJ 699). Secular acceleration, indications for convective redshift, and planet mass limits". Astronomy & Astrophysics. 403 (3): 1077–1087. arXiv:astro-ph/0303528. Bibcode:2003A&A...403.1077K. doi:10.1051/0004-6361:20030396. S2CID 16738100.
- ^ Washington Post: "Signs of a ‘super Earth’ discovered around a nearby star"
- ^ Lubin, Jack; Robertson, Paul; Stefansson, Gudmundur; Ninan, Joe; Mahadevan, Suvrath; Endl, Michael; Ford, Eric; Wright, Jason T.; Beard, Corey; Bender, Chad; Cochran, William D.; Diddams, Scott A.; Fredrick, Connor; Halverson, Samuel; Kanodia, Shubham; Metcalf, Andrew J.; Ramsey, Lawrence; Roy, Arpita; Schwab, Christian; Terrien, Ryan (2021), Stellar Activity Manifesting at a One Year Alias Explains Barnard b as a False Positive, arXiv:2105.07005