Jason John Nassau
Jason John Nassau (1893–1965) was an American astronomer.
He performed his doctoral studies at Syracuse, and gained his Ph.D. mathematics in 1920. (His thesis was Some Theorems in Alternants.) He then became an assistant professor at the Case Institute of Technology in 1921, teaching astronomy. He continued to instruct at that institution, becoming the University's first chair of astronomy from 1924 until 1959 and chairman of the graduate division from 1936 until 1940. After 1959 he was professor emeritus.
From 1924 until 1959 he was also the director of the Case Western Reserve University (CWRU) Warner and Swasey Observatory in Cleveland, Ohio. He was a pioneer in the study of galactic structure. He also discovered a new star cluster, co-discovered 2 novae in 1961, and developed a technique of studying the distribution of red (M-class or cooler) stars.
- Nassau, Jason John, A Textbook of Practical Astronomy, 1934, New York.
- The Nassau Astronomical Station at the Warner and Swasey Observatory is named for him.
- The Jason J. Nassau Prize was established by the Cleveland Astronomical Society in 1965. It is awarded annually to an outstanding senior student in the CWRU Department of Astronomy.
- Nassau crater on the Moon is named for him.
- Asteroid 9240 Nassau is named for him. It was discovered May 31, 1997.
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