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Circumstellar CA II K Lines in G, K and M Giants and Supergiants

Published online by Cambridge University Press:  08 February 2017

A. H. Vaughan Jr.  and
A. Skumanich
A. H. Vaughan Jr.
Affiliation:
Mt.Wilson and Palomar Observatories, California Institute of Technology and Carnegie Institute of Washington, Pasadena, California
A. Skumanich
Affiliation:
Mt.Wilson and Palomar Observatories, California Institute of Technology and Carnegie Institute of Washington, Pasadena, California

Abstract

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Tentative evidence, based on photoelectric observations of the Ca+ emission core, is presented for the existence of circumstellar envelopes in several G and K type “giants.” A significant emission asymmetry in α Tau may imply a chromospheric rather than a circumstellar source.

Keywords

Ca+ emission corcircumstellar absorption linelate-type giants
Type
Part C
Information
International Astronomical Union Colloquium , Volume 2: Spectrum Formation in Stars With Steady-State Extended Atmospheres , August 1970 , pp. 295 - 299
Copyright
Copyright © 1970

References

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