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The Korean Astronomical Society (한국천문학회)
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SPECTROSCOPIC ANALYSIS OF THE RS CVn STAR EI Eri

  • KEERATIBHARAT, J. (Department of Physics and Materials Science, Faculty of Science, Chiang Mai University) ;
  • MKRTICHIAN, D.E. (National Astronomical Research Institute of Thailand) ;
  • KOMONJINDA, S. (Department of Physics and Materials Science, Faculty of Science, Chiang Mai University)
  • Received : 2014.11.30
  • Accepted : 2015.06.30
  • Published : 2015.09.30
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Abstract

We present results of a new high-resolution spectroscopic study of the RS CVn-type binary system EI Eridani (HD26337). We used high S/N ratio LSD profiles to measure a new RV orbit of the primary component and new orbital parameters. We found evidence of strong spectral line profile variations at time intervals indicating the existence of short-lived (few days) spots on the surface of the primary component. We measured a projected rotation velocity of star of 53.2 km/s.

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References

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