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Infrared Spectroscopy of Southern P Cygni Stars

Published online by Cambridge University Press:  04 August 2017

P.J. McGregor ,
A.R. Hyland  and
D.J. Hillier
P.J. McGregor
Affiliation:
Mount Stromlo and Siding Spring Observatories, The Australian National University, Australia
A.R. Hyland
Affiliation:
Mount Stromlo and Siding Spring Observatories, The Australian National University, Australia
D.J. Hillier
Affiliation:
Anglo-Australian Observatory, Australia

Abstract

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Investigations of the 1.0–2.5 μm spectra of high luminosity p Cygni stars reveal the presence of several new emission features. All stars measured show emission in the Brackett and Paschen lines of H I, but the emission strengths of He I 1.083, 1.700, and 2.058 μm relative to the H I lines show large variations. Emission lines of [Fe II] are seen at 1.257 and 1.644 μm in several stars and are particularly strong in HR Car. An interesting subset of these stars show the first-overtone CO bands in emission. The presence of this molecular component associated with hot P Cygni stars has not been inferred from previous optical or UV spectroscopy.

Type
Poster Papers 2
Information
Symposium - International Astronomical Union , Volume 116: Luminous Stars and Associations in Galaxies , 1986 , pp. 257 - 258
Copyright
Copyright © Reidel 1986 

References

Allen, D.A., Jones, T.J., and Hyland, A.R. 1985, Ap. J., 291, 280.CrossRefGoogle Scholar
Lamers, H.J.G.L.M., de Groot, M., and Cassatella, A. 1983, Astr. Ap., 123, L8.Google Scholar
Scoville, N.Z., Krotkov, R., and Wang, D. 1980, Ap. J., 240, 929.CrossRefGoogle Scholar
Whitelock, P.A., Feast, M.W., Roberts, G., Carter, B.S., and Catchpole, R.M. 1983 M.N.R.A.S., 205, 1207.CrossRefGoogle Scholar