Olin J. Eggen

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Olin Jeuck Eggen (July 9, 1919October 2, 1998) was an American astronomer. Some sources incorrectly give his name as Olin Jenck Eggen.

He graduated from the University of Wisconsin-Madison in 1940. After serving in World War II in the OSS, he returned to the university and received his Ph.D. in astrophysics in 1948.

He became known as one of the best observational astronomers of his time. He is best known for a seminal 1962 paper with Donald Lynden-Bell and Allan Sandage which suggested for the first time that the Galaxy had collapsed out of a gas cloud. He first introduced the now-accepted notion of moving groups of stars.

He won the Henry Norris Russell Lectureship in 1985.

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