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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

Deutsch, A. J. 1960, Stellar Atmospheres: Stars and Stellar Systems, VI, ed. Greenstein, J. L. (Chicago: Univ. of Chicago Press), p. 543.Google Scholar
Hummer, D. G., and Rybicki, G. B. 1968, Ap. J., 153, L107.Google Scholar
Vaughan, A. H. Jr. 1968, Ap. J., 154, 87.Google Scholar
Weyman, R., 1963, Ann. Rev. Astr. and Ap., 1, 97.Google Scholar
Wilson, O. C., and Bappu, M. K. V. 1957, Ap. J., 125, 661.Google Scholar
Wilson, O. C. 1960, Ap. J., 132, 136.Google Scholar