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Prof Jacobus Cornelius Kapteyn FRS FRSE LLD was a Dutch astronomer. He carried out extensive studies of the Milky Way. He found that the apparent movement of stars was not randomly distributed but had two preferential directions: the two star streams. This discovery was later reinterpreted as evidence for galactic rotation. Kapteyn also suggested that these stellar velocities could be used to find the amount of non-luminous matter in the galaxy.
Kapteyn's Star is a class M1 red subdwarf about 12.83 light-years from Earth in the southern constellation Pictor; it is the closest halo star to the Solar System. With an apparent magnitude of nearly 9 it is visible through binoculars or a telescope.
Jan Hendrik Oort was a Dutch astronomer who made significant contributions to the understanding of the Milky Way and who was a pioneer in the field of radio astronomy. The New York Times called him "one of the century's foremost explorers of the universe"; the European Space Agency website describes him as "one of the greatest astronomers of the 20th century" and states that he "revolutionised astronomy through his ground-breaking discoveries." In 1955, Oort's name appeared in Life magazine's list of the 100 most famous living people. He has been described as "putting the Netherlands in the forefront of postwar astronomy."
Annette Mairi Nelson Ferguson FRSE is a Scottish observational astrophysicist who specialises in the area of galaxy evolution. She is a professor at the Institute for Astronomy, Edinburgh, and holds the Personal Chair in Observational Astrophysics at the School of Physics and Astronomy, University of Edinburgh.
Leiden Observatory is an astronomical institute of Leiden University, in the Netherlands. Established in 1633 to house the quadrant of Rudolph Snellius, it is the oldest operating university observatory in the world, with the only older still existing observatory being the Vatican Observatory.
Adriaan Blaauw was a Dutch astronomer.
The Dunsink Observatory is an astronomical observatory established in 1785 in the townland of Dunsink in the outskirts of the city of Dublin, Ireland.
Konkoly Observatory is an astronomical observatory located in Budapest, Hungary is part of the Research Centre for Astronomy and Earth Sciences and belongs to the HUN-REN Magyar Kutatási Hálózat. Konkoly Observatory was founded in 1871 by Hungarian astronomer Miklós Konkoly-Thege (1842–1916) as a private observatory, and was donated to the state in 1899. Konkoly Observatory, officially known as HUN-REN CSFK Konkoly Thege Miklós Csillagászati Intézet in Hungarian, is the largest astronomical research institute in Hungary, and hosts the largest telescopes in the country. The Observatory has more than 60 researchers, a quarter of them are non-Hungarian.
The National Observatory of Athens is a research institute in Athens, Greece. Founded in 1842, it is the oldest research foundation in Greece. The Observatory was the first scientific research institute built after Greece became independent in 1829, and one of the oldest research institutes in Southern Europe. It was built around the same period as the United States Naval Observatory.
Kenneth Charles Freeman is an Australian astronomer and astrophysicist who is currently Duffield Professor of Astronomy in the Research School of Astronomy and Astrophysics at the Mount Stromlo Observatory of the Australian National University in Canberra. He was born in Perth, Western Australia in 1940, studied mathematics and physics at the University of Western Australia, and graduated with first class honours in applied mathematics in 1962. He then went to Cambridge University for postgraduate work in theoretical astrophysics with Leon Mestel and Donald Lynden-Bell, and completed his doctorate in 1965. Following a postdoctoral appointment at the University of Texas with Gérard de Vaucouleurs, and a research fellowship at Trinity College, Cambridge, he returned to Australia in 1967 as a Queen Elizabeth Fellow at Mount Stromlo. Apart from a year in the Kapteyn Institute in Groningen in 1976 and some occasional absences overseas, he has been at Mount Stromlo ever since.
Rosemary F. G. Wyse is a Scottish astrophysicist, Fellow of the Royal Astronomical Society (FRAS), and Alumni Centennial Professor of Physics and Astronomy at Johns Hopkins University.
The Royal Observatory, Cape of Good Hope, is a former scientific institution in South Africa. Founded by the British Board of Longitude in 1820, its main building is now the headquarters building of the South African Astronomical Observatory.
Jan Borgman was a Dutch astronomer and university administrator. He was professor of astronomical observation technique at the University of Groningen from 1968 to 1988. During this period he served as rector magnificus from 1978 to 1981 and chair of the board of governors from 1981 to 1988. Borgman subsequently became chairperson of the Netherlands Organisation for Scientific Research.
Stuart Pottasch was a professor at the University of Groningen and a researcher of planetary nebulae.
Anna Margaret Mahala Scaife is a Professor of Radio Astronomy at the University of Manchester and Head of the Jodrell Bank Centre for Astrophysics Interferometry Centre of Excellence. She is the co-director of Policy@Manchester. She was awarded the 2019 Royal Astronomical Society Jackson-Gwilt Medal in recognition of her contributions to astrophysical instrumentation.
The parallactic instrument of Kapteyn is a measuring instrument created by the Dutch astronomer Jacobus Kapteyn around 1886. Using this instrument, Kapteyn analyzed over 1,700 glass plate photos of stars seen from the southern hemisphere. This research contributed to the Cape Photographic Durchmusterung, a star catalogue containing 454,875 entries. Together with the measurements of stars seen from the northern hemisphere the measurements of Kapteyn formed a complete star catalogue with a scope and accuracy that was impressive for its time.
Jacqueline Henrie͏̈tte van Gorkom is a Dutch radio astronomer and Rutherfurd Professor of Astronomy at Columbia University. Van Gorkom is known for her contributions to the field of galaxy evolution, particularly through observations of neutral hydrogen gas.
The Astronomical Observatory of Lviv University is the astronomical observatory of the Ivan Franko National University of Lviv in Lviv, Ukraine. It was founded in 1771 by the Jesuit college of Lviv, which makes it the 17th oldest observatory in Europe. It was closed around 1783 and restored as part of Lviv University in 1900 as the Astronomical Institute and again as the Observatory in 1912. Operations were interrupted by the Second World War, after which the Observatory became part of the University of Lviv in 1945. Research at the observatory encompasses observational and theoretical studies in cosmology, relativistic astrophysics, and stellar astrophysics.
Andrea Ferrara is a Italian theoretical astrophysicist and science communicator.
Paola Caselli is an Italian astronomer and astrochemist known for her research on molecular clouds, star formation and planet formation, and the astrochemistry behind the materials found within the Solar System. She is the director of the Max Planck Institute for Extraterrestrial Physics near Munich in Germany. She also holds an honorary professorship at Ludwig Maximilian University of Munich.
References
- ↑ "Kapteyn History". University of Groningen. 2011-10-10. Retrieved 2023-08-31.
- ↑ "Blaauw professors". www.rug.nl. Kapteyn Astronomical Institute. Retrieved 1 April 2024.
