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On the Differences at Chromospheric Levels between RS Cvn-Type Binaries, Active and Quiet Chromosphere Single Stars, and Active and Quiet Regions in The Sun

Published online by Cambridge University Press:  30 March 2016

Jeffrey L. Linsky
Jeffrey L. Linsky*
Affiliation:
Joint Institute for Laboratory Astrophysics, National Bureau of Standards and, University of Colorado, Boulder, CO 80309, U.S.A.

Extract

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RS CVn-type systems exhibit many similarities to active regions on the Sun. In the last few years considerable progress has been made in quantifying the differences between the atmospheric properties of solar plages and quiet regions. These differences, as summarized in Linsky’s (1979) review, can be simply explained by additional nonradiative heating and include the following: (1) temperature enhancements in the photosphere, (2) heating of the temperature minimum and its displacement downward in mass column density, (3) enhanced radiative losses in the chromosphere and transition region (typically by a factor of 10), (4) steeper chromospheric temperature gradients, and (5) enhanced pressures and densities at the top of the chromosphere, throughout the transition region, and at the base of the corona (again typically by a factor of 10).

Type
Joint Commission Meetings
Information
Highlights of Astronomy , Volume 5: Highlights of Astronomy. As presented at the XVIIth General Assembly of the IAU, 1979 , 1980 , pp. 861 - 862
Copyright
Copyright © Cambridge University Press 1980

References

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