Career
Westerhout was born in The Hague, and studied at the University of Leiden (Sterrewacht te Leiden) with Hendrik van de Hulst and Jan Hendrik Oort. Contemporaries and colleagues in Holland included Hugo van Woerden, C. Lex Muller, Maarten Schmidt, Kwee Kiem King, Lodewijk Woltjer, and Charles L. Seeger, Jr. (son of the ethnomusicologist, brother of Pete Seeger and half-brother of Mike Seeger). While they were students, Wim Brouw, Mike Davis, Ernst Raimond, Whitney Shane and Jaap Tinbergen worked with him.
He was awarded Physics and Astronomy degrees: Cand.(1950) and Drs. (1954) and was awarded a Ph.D. in Astronomy and Physics in 1958. Notable scientific achievements included: the significant Westerhout Catalog of continuum emission radio sources, by which "W" numerical designations such sources are still referenced (see for example Westerhout 49), done with the then-new Dwingeloo telescope; and his survey of neutral hydrogen in the outer parts of our Galaxy. His pioneering work, with colleagues, showed the first hints of spiral structure in the interstellar gas, revealed differential rotation in our Galaxy, and established a revised Galactic coordinate system still in use today.
While still at Leiden University, he held the posts of Assistant (1952–56), Scientific Officer (1956–59, and Chief Scientific Officer (1959–62). Arriving in 1962 as the first Director of a fledgling Astronomy Program at the University of Maryland (started by Uco van Wijk), he grew it into a major department granting masters and doctorate degrees. On the research side the Maryland-Green Bank Galactic 21-cm Line Survey, undertaken with the 91-m radio telescope of the National Radio Astronomy Observatory, not only extended to higher angular resolution our knowledge of Galactic structure, but also accomplished the training of graduate students who went on to notable achievements of their own.
He continued at Maryland in that role through 1973, with additional responsibilities from 1972-73 as Chairman of the Division of Mathematical & Physical Sciences and Engineering. From 1973 to '77 he was Professor of Astronomy at the University of Maryland, temporarily becoming Visiting Astronomer at the Max-Planck-Institut für Radioastronomie (MPIfR) in Bonn, Germany 1973-74.
From 1977-1993 he was Scientific Director at the U.S. Naval Observatory in Washington, DC. While there, he guided the evolution of that observatory toward astronomical data obtained from telescopes at the Flagstaff station, astrometric data produced by the techniques of radio interferometry and by innovative application of optical interferometry techniques (ground- and space-based.)
Together with his wife Judith, he had 4 children – Magda Kathleen, Gart, Bridget and Julian.
When Edward L. G. Bowell discovered asteroid 5105 Westerhout, he named it in Westerhout's honor.
Read more about this topic: Gart Westerhout
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