Jacobus Kapteyn
Prof Jacobus Cornelius Kapteyn FRS FRSE LLD (19 January 1851 – 18 June 1922) was a Dutch astronomer. He carried out extensive studies of the Milky Way and was the discoverer of evidence for galactic rotation. Kapteyn was also among the first to suggest the existence of dark matter using stellar velocities as early as 1922.
Jacobus Cornelius Kapteyn | |
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Jacobus Kapteyn. Painting by Jan Veth (1921). | |
Born | |
Died | 18 June 1922 71) | (aged
Nationality | Dutch |
Alma mater | University of Utrecht |
Known for | Star streaming Discovery of evidence for galactic rotation Kapteyn's star Parallactic instrument of Kapteyn Kapteyn Universe |
Awards | Bruce Medal (1913) James Craig Watson Medal (1913) Gold Medal of the Royal Astronomical Society (1902) |
Scientific career | |
Fields | Astronomy |
Institutions | University of Groningen |
Doctoral students | Willem de Sitter, Pieter Johannes van Rhijn, Willem Schouten, Jan Oort |
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