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Radial Velocity Variations of the Secondary Star in U Geminorum

Published online by Cambridge University Press:  12 April 2016

Richard A. Wade
Richard A. Wade*
Affiliation:
Department of Astronomy, California Institute of Technology

Extract

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We have used a photon-counting array detector at the coudé spectrograph of the Mt. Wilson 2.5-m reflector to follow changes in the near-infrared spectrum of U Geminorum around most of the orbit. A preliminary analysis of two series of exposures shows radial velocity variations in the Na I absorption doublet at λ8183 and λ8195, at the orbital frequency and with the orbital phase appropriate for the M5-type secondary star. A first attempt to detect the K I line at λ7699 was unsuccessful.

Type
Abstracts of Workshop Papers on Dwarf Novae
Information
International Astronomical Union Colloquium , Volume 53: White Dwarfs and Variable Degenerate Stars , August 1979 , pp. 500
Copyright
Copyright © The University of Rochester 1979

References

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