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Microturbulence as a Third Dimension in the G-K Giant Region of the HR Diagram

Published online by Cambridge University Press:  14 August 2015

R. Foy
R. Foy*
Affiliation:
Paris-Meudon Observatory

Extract

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The structure of the HR diagram in the G-K giant region is complex, because of the funneling effect and of the intersection of evolutionary tracks for different stellar masses. Therefore it is impossible to derive the age of a cool giant from its location in the HR diagram alone. To remove this indeterminacy a third dimension is needed, and we suggest microturbulence as the appropriate observational parameter.

Type
Part VII: Theoretical Papers and Summary
Information
Symposium - International Astronomical Union , Volume 80: The HR Diagram , 1978 , pp. 383 - 386
Copyright
Copyright © Reidel 1978 

References

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