Hostname: page-component-745bb68f8f-g4j75 Total loading time: 0 Render date: 2025-01-26T22:07:24.420Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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

Smak, J. 1976, Acta Astr., 26, 277.Google Scholar
Veeder, G. J. 1973, Thesis, California Inst, of Technology.Google Scholar
Wade, R. A. 1979, Astron. J., 89, 562.Google Scholar