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Paper: HI and Spiral Structure with a New Look at M81
Volume: 106, The Minnesota Lectures on Extragalactic Neutral Hydrogen
Page: 96
Authors: Westpfahl, David J.; Adler, David S.
Abstract: Introduction; Why Study Spirals?; Results of Descriptive Studies; The History of Theories of Spiral Structure; Current Theories; A New Look at M81; Determination of Pattern Speeds; An Application: The Pattern Speed of M81; Implications of a Shearing Pattern; Material Arms and the Winding Dilemma Revisited; Summary and Speculation
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