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Astrophysics and Space Science

, Volume 182, Issue 1, pp 1–17 | Cite as

V792 Her=HD 155638: A totally eclipsing RS CVn binary

  • Charles H. Nelson
  • Douglas S. Hall
  • Francis C. Fekel
  • Robert E. Fried
  • Richard E. Lines
  • Helen C. Lines
Article

Abstract

Photometry of HD 155638=V792 Her has been analyzed to determine the elements of this totally eclipsing RS CVn binary. The light variation outside eclipse was found to have a period of 27d.07±0d.07, which is slightly different from the 27d.5384±0d.0045 orbital period. Analysis of the eclipses was achieved by a modification of the Russell-Merrill technique. With the aid of radial velocity measures, absolute elements were obtained for the hot and cool stars, respectively;Rh=2.58R,Rc=12.28R,Mh=1.40M,Mc=1.46M,i=80o.61 and velocity semi-amplitudesKc=48.36 km s−1±0.79 km s−1, andKh=50.50 km s−1±0.33 km s−1. The apparent magnitudes areVh=9 m .73 andVc=8 m .48. The distance to HD 155638 was estimated to be 310 parsecs.

Keywords

Orbital Period Radial Velocity Velocity Measure Light Variation Apparent Magnitude 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1991

Authors and Affiliations

  • Charles H. Nelson
    • 1
  • Douglas S. Hall
    • 2
  • Francis C. Fekel
    • 2
  • Robert E. Fried
    • 3
  • Richard E. Lines
    • 4
  • Helen C. Lines
    • 4
  1. 1.Dyer ObservatoryVanderbilt UniversityNashvilleUSA
  2. 2.Dyer ObservatoryVanderbilt UniversityNashvilleUSA
  3. 3.Braeside ObservatoryFlagstaffUSA
  4. 4.Lines ObservatoryPhoenixUSA

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