The Evolution of Chromospheric Structure on AR Lacertae

  • James E. Neff
Part of the NATO ASI Series book series (ASIC, volume 319)


I present preliminary results from the analysis of a series of ultraviolet spectra AR Lac obtained in 1987. These spectra are being used to image the spatial structure of the chromosphere and to study the dynamics of flaring regions. Comparing these results with previous results, I will discuss the evolution of the chromospheric structure from 1983 to 1987.


Ultraviolet Spectrum Orbital Phase NASA Goddard Space Asymmetric Component Orbital Cycle 
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  1. Neff, J.E. 1987, Ph.D. thesis, University of Colorado, Boulder.Google Scholar
  2. Neff, J.E. 1988, in The Impact of Very High S/N Spectroscopy on Stellar Physics, eds. G.C. De Strobel and M. Spite, ( Kluwer: Dordrecht ), p. 223.Google Scholar
  3. Neff, J.E., Walter, F.M., Rodonò, M., and Linski, J.L. 1988, Astron. Astrophys., 215, 79.ADSGoogle Scholar
  4. Walter, F.M., Neff, J.E., Gibson, D.M., Linsky, J.L., Rodonò, M., Gary, D.E., and Butler, C.J. 1987, Astron. Astrophys., 186, 241.ADSGoogle Scholar

Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • James E. Neff
    • 1
  1. 1.Lab. for Astronomy and Solar PhysicsNASA Goddard Space Flight CenterGreenbeltUSA

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