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On Spectral Observations of ζ Gem

Published online by Cambridge University Press:  14 August 2015

A.G. Shcherbakov
A.G. Shcherbakov*
Affiliation:
Crimean Astrophysical Observatory, U.S.S.R.

Abstract

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I want to show two slides with the evidence of the presence of the λ 10830 Å HeI absorption line in the spectrum of the classical Cepheid ζ Gem. In Figure 1 you can see the profile of the blend near λ 10830 å (dispersion 48 Å mm−1); this blend consists of lines of neutral silicon, helium and atmospheric water. The monotonous phase changes of the profile are easily seen.

Type
Part 3 / Type I (Classical) Cepheids
Information
Symposium - International Astronomical Union , Volume 67: Variable Stars and Stellar Evolution , 1975 , pp. 225 - 227
Copyright
Copyright © Reidel 1975 

References

Kelsall, T.: 1971, Multi-Colour Photometry of Supergiants and Cepheids, preprint, Greenbelt Radio Obs.Google Scholar
Namba, O.: 1963, Bull. Astron. Inst. Neth. 17, 93.Google Scholar
Vaughan, A. H. and Zirin, H.: 1968, Astrophys. J. 152, 123.CrossRefGoogle Scholar