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Angular Momentum Loss and Chromospheric Activity in Late-Type Dwarfs

Published online by Cambridge University Press:  04 August 2017

David R. Soderblom
David R. Soderblom*
Affiliation:
Harvard-Smithsonian Center for Astrophysics Cambridge, Massachusetts USA

Extract

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A chromospheric color-magnitude diagram has been constructed from the Vaughan-Preston survey of Ca II emission among solar neighborhood stars. The relative flux in the H and K lines declines with mass on the lower main-sequence as a consequence of the decline of the ZAMS rotational velocity with mass. The features of this C-M diagram are discussed, and some evidence for a gap in the distribution of Ca II emission with age is examined.

Type
V. Stellar Winds and Spindown in Late — Type Stars
Information
Symposium - International Astronomical Union , Volume 102: Solar and Stellar Magnetic Fields: Origins and Coronal Effects , 1983 , pp. 439 - 444
Copyright
Copyright © Reidel 1983 

References

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