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Astrophysical Applications of Approximate Methods for Molecular Opacities - from stars to substellar brown dwarfs

Published online by Cambridge University Press:  12 April 2016

Takashi Tsuji
Takashi Tsuji*
Affiliation:
Institute of Astronomy, The University of Tokyo, Mitaka, Tokyo, 181 Japan

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For studies of radiative processes in stellar environment, knowledges on opacities are essential, and molecular line opacities play a dominant role in many cases where temperatures are roughly below 4,000K. Accurate treatments of molecular line opacities require high precision line data for millions (and up to billions?) of lines. Recent progress in theoretical as well as in experimantal molecular physics made it possible to realize such an approach, and dedicated efforts are being done to developing extensive databases for polyatomic (Jørgensen in this volume) as well as for diatomic (Kurucz in this volume) molecules. These accurate databases should be of fundamental importance in our understanding of astronomical observations that are progressing rapidly both in scope and in accuracy.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 146: Molecules in the Stellar Environment , 1994 , pp. 79 - 97
Copyright
Copyright © Springer-Verlag 1994

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