On a technique for inferring sizes of stellar active regions

  • Andrea K. Dobson-Hockey
  • Richard R. Radick
Session III: Small Scale Atmospheric Structures: Data
Part of the Lecture Notes in Physics book series (LNP, volume 254)


Our preliminary results indicate that sunspots lead associated plages by an amount that is directly proportional to the plage area. Our next step will be to digitize a series of spectroheliograms to better calibrate this relation. We also plan to examine other solar data sets as proxies for spot and plage signals to better determine whether a phase lag is measureable from stellar-like observations of the Sun, and thus, whether suitable observations of solar-type stars could yield information concerning areas of stellar active regions.


Sunspot Number Light Curf Sunspot Group Solar Active Region Spot Signal 
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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  1. Gilman, P.A. and Howard, R.F., 1985 ApJ 295, 233.CrossRefGoogle Scholar
  2. Lockwood, G.W., Thompson, D.T., Radick, R.R., Osborn, W.H., Baggett, W.E., Duncan, D.K., and Hartmann, L.W., 1984 PASP 96, 714.CrossRefGoogle Scholar
  3. Neidig, D., 1980 SP 66, 205.CrossRefGoogle Scholar
  4. Radick, R.R., Duncan, D.K., Baggett, W.E., Thompson, D.T., and Lockwood, G.T., 1985 In preparation.Google Scholar

Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Andrea K. Dobson-Hockey
    • 1
  • Richard R. Radick
    • 1
  1. 1.New Mexico State University and AFGL/Sacramento PeakNew Mexico

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