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The Spectrum Variable a Centauri (HD 125 823)

Published online by Cambridge University Press:  12 April 2016

D. A. Klinglesmith ,
P. L. Bernacca  and
H. Frey
D. A. Klinglesmith
Affiliation:
NASA, Goddard Space Flight CenterGreenbelt
P. L. Bernacca
Affiliation:
NASA, Goddard Space Flight CenterGreenbelt
H. Frey
Affiliation:
College Park, Maryland

Abstract

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High dispersion spectra in the blue violet region and OAO II spectral scans in the UV of the star a Centauri are presented. The variation of equivalent widths and radial velocity are presented. The appearance and disappearance of the forbidden lines of helium, the change in the wing structure of λ 4471 of He I, the strengthening of the UV resonance lines at phase 0.5 and the presence of the UV feature of λ 1720 indicate that the star’s atmosphere is experiencing drastic density changes.

Type
IV. Duplicity and its Consequences among the Intrinsic Variable Stars
Information
International Astronomical Union Colloquium , Volume 15: New Directions and Frontiers in Variable Stars Research , 1971 , pp. 205 - 216
Copyright
Copyright © Cambridge University Press 1971

References

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