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Line Formation in Expanding Atmospheres: (Review Paper)

Published online by Cambridge University Press:  14 August 2015

D. G. Hummer
D. G. Hummer*
Affiliation:
Joint Institute for Laboratory Astrophysics, National Bureau of Standards and University of Colorado, Boulder, Colo., U.S.A.
*
*Staff Member, Laboratory Astrophysics Division, National Bureau of Standards and Department of Physics and Astrophysics, University of Colorado.

Abstract

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The current state of understanding of line formation processes in expanding atmospheres is reviewed, and the successes and limitations of current computational techniques are summarized. Some results for differential rotation are also given, although very little work has been done in this area. Special attention is given to the severe difficulties that are encountered in inferring the structure of rapidly expanding or rotating atmospheres from observed line profiles because of the failure under these conditions of the Eddington-Barbier relation in integrated light; the value in this respect of continuum and interferometric observations is emphasized.

Type
Part IV: Line Formation in Expanding Atmospheres
Information
Symposium - International Astronomical Union , Volume 70: Be and Shell Stars , 1976 , pp. 281 - 312
Copyright
Copyright © Reidel 1976 

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