Coordinated Photometry, Spectroscopy and X-ray Observations of Flare Stars

  • C. J. Butler
  • J. G. Doyle
  • B. H. Foing
  • M. Rodono
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 143)


From simultaneous monitoring in several spectral regions we have compared the characteristics of flare activity in UV Ceti and YZ CMi. Almost continuous variability is seen in Hr and U-band flux in both stars but only in UV Ceti does this correlate strongly with soft X-rays. The relative fluxes in the Balmer emission lines indicates higher densities in the chromospheres of these two dMe stars as compared to the Sun.


Line Flux Balmer Line Flare Activity Solar Chromosphere Small Flare 
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Copyright information

© Kluwer Academic Publishers 1988

Authors and Affiliations

  • C. J. Butler
    • 1
  • J. G. Doyle
    • 1
  • B. H. Foing
    • 2
  • M. Rodono
    • 3
  1. 1.Armagh ObservatoryArmaghN. Ireland
  2. 2.L.P.S.P.Verriers le BuissonFrance
  3. 3.Institute of AstronomyUniversity of CataniaItaly

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