Astrophysics and Space Science

, Volume 136, Issue 1, pp 63–76 | Cite as

The new light curves and period study of AK Herculis

  • Z. Tunca
  • V. Keskin
  • M. C. Akan
  • S. Evren
  • C. Ibanoğlu
Article
Received:

Abstract

B andV observations of the W Ursae Majoris-type eclipsing variable system AK Her were made on five nights at the Ege University Observatory. Several times of minima were obtained during the observations and the new light elements were calculated. The light-time period was found to be about 75.72 years. The light curve of the system appears to change in each cycle for both colours. The secondary minimum of the system seems to be a total eclipse with a duration of about 42 m .5.

Keywords

Colour Variable System Light Curve Light Curf Light Element 
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

© D. Reidel Publishing Company 1987

Authors and Affiliations

  • Z. Tunca
    • 1
  • V. Keskin
    • 1
  • M. C. Akan
    • 1
  • S. Evren
    • 1
  • C. Ibanoğlu
    • 1
  1. 1.Ege University ObservatoryIzmirTurkey

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